A) \[P\]and\[Q\]
B) \[P\] and \[R\]
C) \[Q\]and\[R\]
D) \[P,\,\,Q\]and\[R\]
Correct Answer: B
Solution :
The electronic configuration of elements. \[P\to 2,\,\,3\] \[Q\to 2,\,\,7\] \[R\to 2,\,\,8,\,\,3\] Elements \[P\] and \[R\] have the same number of valence electrons. Hence, they show the same chemical properties.You need to login to perform this action.
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