Question

The following table shows four elements A,B,C,D along with their electronic

comfiguration. Then answer the following questions.

Element A B C D

Comfiguration 2, 1 2, 8 2, 8, 1 2, 8, 8

i) Which two elements belong to same period ?​

Answer 1

Explanation:

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Answer 2

Answer:

May I ca ll you now??

Explanation:

please