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InterviewSolution
| 1. |
The atomic size of beryllium is smaller than the atomic size of lithium. Give reason. |
| Answer» Solution :In lithium (atomic NUMBER = 3) the outermost electron of L-shell is attracted by 3 protons. But in beryllium (atomic number = 4) the outermost ELECTRONS of L-shell are attracted by 4 protons. That is, the electrons of L-shell are attracted STRONGLY TOWARDS the nucleus in case of beryllium as compared to lithium. THEREFORE, the atomic size of beryllium is smaller than the atomic size of lithium. | |