Question

Z+3 has electronic configuration as [Ar] 3d104s2, hence the element Z lies in


1)s-block
2)p-block
3)d-block
4)f-block

Answer 1

Explanation:

ANSWER

Electronic configuration is 1s

2

,2s

2

,2p

6

,3s

2

,2p

6

,3d

10

,4s

2

,4p

6

,4d

10

,5s

2

.

Here last electron fills in 4d-orbital so its d-block element.

Hence, option 3 is correct