Question

4 An element X has following electronic configuration.
K L M
2 8 3
(a) To which group of periodic table does element X belong?
(b) What is the molecular formula of its chloride ?​

Answer 1

After nearest noble gas configuration it has 3 electrons in its valance shell. Therefore it belongs to group 13.

The metal with atomic number 13 is Aluminium.

Formula of its chloride is AlCl3.

Answer 2

Explanation:

A) GROUP 13

B)Alcl3 (aluminium chloride )