Question

the last electrons of an atom is filled in 3d subshell the subshell configuration was 3d2​

Answer 1

Answer:

30jjhhh

Explanation:

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Answer 2

Explanation:

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