Question

4. Four elements ABCD along with their electronic configurations are given below Elements - ABCD
Electronic Configuration - 2,1 2,8 2,8, 1 2, 8, 8
4. Now answer the following questions
a) Which two elements belong to the same period,
b) Which two elements belong to the same group
c) Which element out of A and C is more
reactive and why?​

Answer 1

Answer:

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