Aluminium is an element in the periodic table that always exists as a diatomic molecule

variable valency is exhibited by the following atoms

It represents a specific element or one atom of an element.

The valency of all metals and hydrogen is considered

What is the valency of Calcium and Aluminium?

What is the formula of the compound formed between calcium and oxygen?

A molecule of a compound is electrically _____.

Examples of elements which do not show variable valency are ______.

The symbol of ammonium radical is ______.

Phosphorus is an example of __________.

Which of the following forms an electropositive trivalent ion?

The correct symbol for copper is ______.

What are the constituent elements of aluminium phosphate?

How do you represent Lithium hydride?

A group of atoms having negative or positive charge is called ______.

The molecular formula for Ammonium carbonate is

Name the elements present in Ammonia

Substances that are formed as a result of chemical reaction are called _____