Question

the last Subshell of an element is 3p and there are 3 electron in it a) write the complete electronic configuration of the elements b) identify it's period and group.

Answer 1

Answer:

Complete the electronic configuration is 1s

2

,2s

2

,2p

6

,3s

2

,3p

6

,3d

8

,4s

2

. and atomic number is 28.

Period number: 8+2=10, ∵ group number = No. of valence electron

Explanation:

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