Question

the one who will be first will be marked as brainlist answer​

Answer 1

Generally, compound contains more than two elements or two elements. Hence, it is known as COMPOUND. But, elements donot contain more than it's element. Hence, it is known as ELEMENT.

H2O - Compound ( it contains more than one element - hydrogen and oxygen.)

Cl2 - Element

Methane - Compound ( contains CO2 and H2 )

N2 - Element.

HCl - Compound ( contains hydrogen and chlorine )

CuSo4 - Compound ( contains copper and sulfur )

Diamond - Element.

Carbon dioxide - Compound ( contains two oxygen atoms )

Calcium carbonate - Compound ( contains Carbon, oxygen, calcium ).

Here is your answer . Hope it helps you.