Choose from the following:_6C, _8O , _ 10 Ne, _ 11 Na, _ 14 Si 1. Elements that should be in the same period. 2. Elements that should be in the same group. State reason for your selection in each case.

Choose from the following:_6C, _8O , _ 10 Ne, _ 11 Na, _ 14 Si 1.…

Question

Choose from the following:$_6\text{C}, {_8\text{O}}, _{\text{ 10}}\text{Ne}, _{\text{ 11}}\text{Na}, _{\text{ 14}}\text{Si}$

Elements that should be in the same period.
Elements that should be in the same group.

State reason for your selection in each case.

✓

Answer

Electronic Configuration:
C - 2, 4
O - 2, 6
Ne - 2, 8
Na - 2, 8,1
Si - 2, 8, 4
Elements in which electrons are filled in first 2 shells: C, O and Ne. So these elements lie in the same period.
Elements in which electrons are filled in first 3 shells: Na and Si. So these elements lie in the same period.
Elements with same number of 4 valence electrons: C, Si. So, these elements lie in the same group.

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