Question

State the Atomic number, Electronic configuration, Number of electrons: lost / gain and Valency Metal / non metal / inert gas / metalloid of the following.
Oxygen
Magnesium
Fluorine
Potassium
Sulphur
Neon
Aluminium
Silicon
Calcium

Answer 1

Answer:

Oxygen:

Atomic number:8 ;electronic configuration:2,6; No.of electrons gain=2;

Valency:2;Non metal

Magnesium:

Atomic number:12 ;electronic configuration:2,8,2; No.of electrons to lose=2;Valency:2; metal.

Fluorine:

Atomic number:9 ;electronic configuration:2,7; No.of electrons gain=1;

Valency:1;Non metal

Potassium:

Atomic number:19 ;electronic configuration:2,8,8,1; No.of electrons to lose=1;Valency:1; metal.

Sulphur:

Atomic number:16 ;electronic configuration:2,8,6; No.of electrons gain=2;

Valency:2;Non metal

Neon:

Atomic number:10;electronic configuration:2,8; No.of electrons gain=0;

Valency:0;Noboe gas

Aluminium:

Atomic number:13 ;electronic configuration:2,8,3; No.of electrons to lose=3;Valency:3;metal

Silicon:

Atomic number:14 ;electronic configuration:2,8,4; No.of electrons to share=4;Valency:4; Metalloid.

Calcium:

Atomic number:20 ;electronic configuration:2,8,8,2; No.of electrons to lose=2;

Valency:2; Metal.

Explanation: