Question

The atomic no
of an element
is 15 what is its valency
​

Answer 1

Answer:

The atomic number of element Phosphorus is 15

and it's valency is 5 .

as it has half filled 2p orbital

Answer 2

Answer:

3

Explanation:

Electronic configuration= 2,8,5

Therefore Valence electron is 5

Valency = 8-5 =3

Remeber 1 2 3 4 valence electron valency is 1 2 3 4 but for nos above like for 5 subtract with 8 same for 6 7 8

eg valence electron 8

Valency = 8-8=0

eg2 valence electron is 6

Valency= 8-6 = 2

eg 3 Valence electron 4 valency is also 4

Thank u