Question

An elements P has atomic no. 13.
(i) Write its electronic configuration
(ii) State the group to which its belongs.
(iii) Elements P is metal or non metal?
(iv) Write the formula of its oxide

Answer 1

Answer:

The element is Aluminium

E.C - 2 , 8 , 3

It belongs to group no 13

Aluminium is a metal

Oxide - Al2O3

Answer 2

Aluminium (Al)

Explanation:

Given element has atomic number 13.

We infer:

Aluminium is the element. Its symbol is Al and its atomic mass is 26.98.

Electronic configuration is: 2, 8, 3.

Belongs to Group 13 of the periodic table.

Aluminium is a metal.

Valency: It will lose 3 electrons to complete its octet. Hence its valency is +3.

Oxide: So the oxide of aluminium, aluminium oxide, will have the formula Al2O3.