Question

Which of the following represent a compound?

(Nitrogen, Oxygen, Water, Hydrogen​

Answer 1

Answer:

water is the compound and all others are elements

Explanation:

because

• nitrogen is N
• oxygen is O2 and
• hydrogen is H
• but water is H2o

Answer 2

Water is a compound.

Explanation:

A compound is a substance which is formed when two or more elements chemically bonds together in definite proportions.

• Compound is composed of molecules that consist of atoms of two or more elements.

• Water is a compound which is formed which has two different elements - hydrogen and oxygen ($H_{2} O$)

• Two atoms of hydrogen and one atom of oxygen bonds together to form a water molecule. Bond between the three atoms is a covalent bond. Covalent bond is formed when there is sharing of electrons.

• The characteristics of water molecule is different than that of hydrogen atoms or oxygen atoms.
• Nitrogen, oxygen and hydrogen are all elements because they consist of similar type of atoms.