Question 1
Copy and complete the following table
| Element | Number of Neutrons | Electronic Configuration | Group in the periodic Table |
| \(^{23}_{11}Na\) | --- | 1s\(^{2}\)2s\(^{2}\)2p\(^{6}\)3s\(^{1}\) | 1 |
| \(^4_2He\) | 2 | ---- | --- |
| ---- | 7 | 1s\(^{2}\)2s\(^{2}\)2p\(^{2}\) |
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Theory