When the particles of a substance contain only one type of atoms, that substance is called a / an

Combination of atoms of same elements is known as

If atoms of different elements combine then … is formed.

Symbol of potassium

The other name of tungsten

Correct method of representing a symbol

Which of the following is octatomic ?

The valency of sulphate is

In $N{H}_{4}ClNH\_4Cl$, the cation is

Chemical formula of aluminium sulphate is

Molecular mass of $H_{2}S{O}_{4}H\_2SO\_4$ is

Molar mass of $1.5055\times 10^{23}1.5055\backslash times10^\{23\}$ number of calcium atoms

Convert into moles : 8 gm of Mg.

Among the following which element has least number of atoms ?

“Mass is neither created nor destroyed during a chemical reaction”. This is known as ……