Question

An element X forms a compound XH3 with hydrogen. Write the chemical formula of chloride of X.​

Answer 1

Answer:

An element X combines with hydrogen to form a compound XH3. The element X is placed on the right side of the periodic table. The element X can be aluminum. It belongs to group IIIA or 13. 

As the electronic configuration of Al is 2,8,3.

A.  Has 3 valency.

B.  Is a metal and is solid.

E   AlH3 reacts with water to form a basic compound Al(OH)3.

AlH3+3H2O→Al(OH)3+3H2 

The statements E, A, and B are true.