Question

I) How many valence electrons are there in the valence shell of central atoms
PCL5, SF6& BCL3​

Answer 1

Answer:

5,6,3

Explanation:

1. P belongs to nitrogen family hence it's valence electrons in the outer most shell is 5.
2. S belongs to oxygen family. Valence electrons in outer most shell is 6.
3. B - atomic number is 5 therefore it's valence electrons in outer most shell is 3.