diff --git a/app/src/main/java/com/schoolapp/cleverclass/PSEActivity.kt b/app/src/main/java/com/schoolapp/cleverclass/PSEActivity.kt
index 2988291..c03cced 100644
--- a/app/src/main/java/com/schoolapp/cleverclass/PSEActivity.kt
+++ b/app/src/main/java/com/schoolapp/cleverclass/PSEActivity.kt
@@ -67,6 +67,15 @@ fun PSEContent(activity: ComponentActivity){
         mutableStateOf(-1)
     }
     val elementConstructorList = listOf(
+        "H", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "He",
+        "Li", "Be", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "B", "C", "N", "O", "F", "Ne",
+        "Na", "Mg", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "Al", "Si", "P", "S", "Cl", "Ar",
+        "K", "Ca", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "Sc", "Ti", "V", "Cr", "Mn", "Fe", "Co", "Ni", "Cu", "Zn", "Ga", "Ge", "As", "Se", "Br", "Kr",
+        "Rb", "Sr", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "Y", "Zr", "Nb", "Mo", "Tc", "Ru", "Rh", "Pd", "Ag", "Cd", "In", "Sn", "Sb", "Te", "I", "Xe",
+        "Cs", "Ba", "La", "Ce", "Pr", "Nd", "Pm", "Sm", "Eu", "Gd", "Tb", "Dy", "Ho", "Er", "Tm", "Yb", "Lu", "Hf", "Ta", "W", "Re", "Os", "Ir", "Pt", "Au", "Hg", "Tl", "Pb", "Bi", "Po", "At", "Rn",
+        "Fr", "Ra", "Ac", "Th", "Pa", "U", "Np", "Pu", "Am", "Cm", "Bk", "Cf", "Es", "Fm", "Md", "No", "Lr", "Rf", "Db", "Sg", "Bh", "Hs", "Mt", "Ds", "Rg", "Cn", "Nh", "Fl", "Mc", "Lv", "Ts", "Og"
+    )
+    val elementButtonCurrent = listOf(
         0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1,
         2, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 4, 5, 6, 7, 8, 9,
         10, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, 13, 14, 15, 16, 17,
@@ -89,7 +98,7 @@ fun PSEContent(activity: ComponentActivity){
                 IconButton(onClick = { activity.finish() }) {
                     Icon(
                         imageVector = Icons.Filled.ArrowBack,
-                        contentDescription = null,
+                        contentDescription = "",
                         modifier = Modifier.size(60.dp),
                         tint = MaterialTheme.colorScheme.onPrimaryContainer
                     )
@@ -101,7 +110,7 @@ fun PSEContent(activity: ComponentActivity){
                 }) {
                     Icon(
                         imageVector = Icons.Outlined.Info,
-                        contentDescription = null,
+                        contentDescription = "",
                         modifier = Modifier.size(28.dp),
                         tint = MaterialTheme.colorScheme.onPrimaryContainer
                     )
@@ -118,14 +127,14 @@ fun PSEContent(activity: ComponentActivity){
         ) {
             Row {
                 for (i in 0 .. 31) {
-                    if (elementConstructorList[i] != -1) {
+                    if (elementConstructorList[i] != "") {
                         Box(modifier = Modifier
                             .padding(3.dp)
                             .size(60.dp)
                             .background(color = Color(0xFFBCA76D))
-                            .clickable { dialogChooser = elementConstructorList[i] }
+                            .clickable { dialogChooser = elementButtonCurrent[i] }
                         ) {
-                            Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                            Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                         }
                     } else {
                         Box(
@@ -138,14 +147,14 @@ fun PSEContent(activity: ComponentActivity){
             }
             Row {
                 for (i in 32 .. 63)
-                    if (elementConstructorList[i] != -1) {
+                    if (elementConstructorList[i] != "") {
                         Box(modifier = Modifier
                             .padding(3.dp)
                             .size(60.dp)
                             .background(color = Color(0xFFC65253))
-                            .clickable { dialogChooser = elementConstructorList[i] }
+                            .clickable { dialogChooser = elementButtonCurrent[i] }
                         ) {
-                            Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                            Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                         }
                     } else {
                         Box(
@@ -157,14 +166,14 @@ fun PSEContent(activity: ComponentActivity){
             }
             Row {
                 for (i in 64 .. 95)
-                    if (elementConstructorList[i] != -1) {
+                    if (elementConstructorList[i] != "") {
                         Box(modifier = Modifier
                             .padding(3.dp)
                             .size(60.dp)
                             .background(color = Color(0xFF337733))
-                            .clickable { dialogChooser = elementConstructorList[i] }
+                            .clickable { dialogChooser = elementButtonCurrent[i] }
                         ) {
-                            Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                            Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                         }
                     } else {
                         Box(
@@ -176,15 +185,15 @@ fun PSEContent(activity: ComponentActivity){
             }
             Row {
                 for (i in 96 .. 127)
-                    if (elementConstructorList[i] != -1) {
+                    if (elementConstructorList[i] != "") {
                         if (i in 112..121) {
                             Box(modifier = Modifier
                                 .padding(3.dp)
                                 .size(60.dp)
                                 .background(color = Color(0xFF337733))
-                                .clickable { dialogChooser = elementConstructorList[i] }
+                                .clickable { dialogChooser = elementButtonCurrent[i] }
                             ) {
-                                Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                             }
                         }
                         else {
@@ -192,9 +201,9 @@ fun PSEContent(activity: ComponentActivity){
                                 .padding(3.dp)
                                 .size(60.dp)
                                 .background(color = Color(0xFFDC2222))
-                                .clickable { dialogChooser = elementConstructorList[i] }
+                                .clickable { dialogChooser = elementButtonCurrent[i] }
                             ) {
-                                Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                             }
                         }
                     } else {
@@ -207,15 +216,15 @@ fun PSEContent(activity: ComponentActivity){
             }
             Row {
                 for (i in 128..159)
-                    if (elementConstructorList[i] != -1) {
+                    if (elementConstructorList[i] != "") {
                         if (i in 144..153) {
                             Box(modifier = Modifier
                                 .padding(3.dp)
                                 .size(60.dp)
                                 .background(color = Color(0xFFDC2222))
-                                .clickable { dialogChooser = elementConstructorList[i] }
+                                .clickable { dialogChooser = elementButtonCurrent[i] }
                             ) {
-                                Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                             }
                         }
                         else {
@@ -223,9 +232,9 @@ fun PSEContent(activity: ComponentActivity){
                                 .padding(3.dp)
                                 .size(60.dp)
                                 .background(color = Color(0xFF129DC3))
-                                .clickable { dialogChooser = elementConstructorList[i] }
+                                .clickable { dialogChooser = elementButtonCurrent[i] }
                             ) {
-                                Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                             }
                         }
                     } else {
@@ -238,16 +247,16 @@ fun PSEContent(activity: ComponentActivity){
             }
             Row {
                 for (i in 160..191)
-                    if (elementConstructorList[i] != -1) {
+                    if (elementConstructorList[i] != "") {
                         when (i) {
                             in 162..175 -> {
                                 Box(modifier = Modifier
                                     .padding(3.dp)
                                     .size(60.dp)
                                     .background(color = Color(0xFFDC2222))
-                                    .clickable { dialogChooser = elementConstructorList[i] }
+                                    .clickable { dialogChooser = elementButtonCurrent[i] }
                                 ) {
-                                    Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                    Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                                 }
                             }
                             in 176..185 -> {
@@ -255,9 +264,9 @@ fun PSEContent(activity: ComponentActivity){
                                     .padding(3.dp)
                                     .size(60.dp)
                                     .background(color = Color(0xFF129DC3))
-                                    .clickable { dialogChooser = elementConstructorList[i] }
+                                    .clickable { dialogChooser = elementButtonCurrent[i] }
                                 ) {
-                                    Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                    Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                                 }
                             }
                             else -> {
@@ -265,9 +274,9 @@ fun PSEContent(activity: ComponentActivity){
                                     .padding(3.dp)
                                     .size(60.dp)
                                     .background(color = Color(0xFFDDCC69))
-                                    .clickable { dialogChooser = elementConstructorList[i] }
+                                    .clickable { dialogChooser = elementButtonCurrent[i] }
                                 ) {
-                                    Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                    Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                                 }
                             }
                         }
@@ -281,16 +290,16 @@ fun PSEContent(activity: ComponentActivity){
             }
             Row {
                 for (i in 192 .. 223)
-                    if (elementConstructorList[i] != -1) {
+                    if (elementConstructorList[i] != "") {
                         when (i) {
                             in 194..207 -> {
                                 Box(modifier = Modifier
                                     .padding(3.dp)
                                     .size(60.dp)
                                     .background(color = Color(0xFF129DC3))
-                                    .clickable { dialogChooser = elementConstructorList[i] }
+                                    .clickable { dialogChooser = elementButtonCurrent[i] }
                                 ) {
-                                    Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                    Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                                 }
                             }
                             in 208..217 -> {
@@ -298,9 +307,9 @@ fun PSEContent(activity: ComponentActivity){
                                     .padding(3.dp)
                                     .size(60.dp)
                                     .background(color = Color(0xFFDDCC69))
-                                    .clickable { dialogChooser = elementConstructorList[i] }
+                                    .clickable { dialogChooser = elementButtonCurrent[i] }
                                 ) {
-                                    Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                    Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                                 }
                             }
                             else -> {
@@ -308,9 +317,9 @@ fun PSEContent(activity: ComponentActivity){
                                     .padding(3.dp)
                                     .size(60.dp)
                                     .background(color = Color(0xFF7044DD))
-                                    .clickable { dialogChooser = elementConstructorList[i] }
+                                    .clickable { dialogChooser = elementButtonCurrent[i] }
                                 ) {
-                                    Text(modifier = Modifier.align(Alignment.Center), text = readElementSymbol(activity, elementConstructorList[i]), color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
+                                    Text(modifier = Modifier.align(Alignment.Center), text = elementConstructorList[i], color = com.schoolapp.cleverclass.ui.theme.TextOnColouredButton)
                                 }
                             }
                         }
@@ -385,7 +394,6 @@ fun readElementData(context: Context, int: Int): String {
     val elementDataArray = rootObj.getJSONArray("elements")
     val elementData = elementDataArray.getJSONObject(int)
     return "Name\n >>> ${elementData.get("Name")}\n\n" +
-            "Elementsymbol\n >>> ${elementData.get("Elementsymbol")}\n\n" +
             "Molare Masse\n >>> ${elementData.get("Molare Masse")}\n\n" +
             "Dichte\n >>> ${elementData.get("Dichte")}\n\n" +
             "Elektronegativität\n >>> ${elementData.get("Elektronegativität")}\n\n" +
@@ -396,13 +404,4 @@ fun readElementData(context: Context, int: Int): String {
             "Strahlungsart\n >>> ${elementData.get("Strahlungsart")}\n\n" +
             "künstlich\n >>> ${elementData.get("künstlich")}\n\n" +
             "langlebigstes Isotop\n >>> ${elementData.get("langlebigstes Isotop")}"
-}
-fun readElementSymbol(context: Context, int: Int): String {
-    val file = "elements_data.json"
-    val assetManager = context.assets
-    val inputStream = assetManager.open(file)
-    val rootObj = JSONObject(InputStreamReader(inputStream).readText())
-    val elementDataArray = rootObj.getJSONArray("elements")
-    val elementData = elementDataArray.getJSONObject(int)
-    return "${elementData.get("Elementsymbol")}"
 }
\ No newline at end of file