Question

Quantum numbers of an electron in outer most orbit of an atom are given below.

N l ml ms
3 2 0 +1/2
i. Which is the outer most shell of the element?
ii. Write the electronic configuration of the element?
iii. What is the atomic number of the element?
iv. Write the valency of the element?

Answer 1

N= 3 level three M

1s2,2s2,2p6,3s2,3p6,4s2,3d3

Atomic no. 23

Valency +2,+3,+4,+5

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