Question

Which one of the following statements is correct?

·Water is a compound and nitrogen is an element.
·Water and nitrogen are both compounds.
·Water and nitrogen are both elements.
·Water is an element and nitrogen is a compound.

Answer 1

Water is a compound and nitrogen is an element is the correct statement.

Explanation:

• Water is denoted by the formula $H_{2}O$ and Nitrogen is denoted by N

• Each molecule of water consists of one oxygen atom and two hydrogen atoms.

• Thus, water $H_{2}O$ is a compound.

• Nitrogen is a naturally existing element with an atomic number of $7$.

• Nitrogen can combine with itself or with other elements to make different compounds.
• Nitrogen is one of the essential elements of life.
• It constitutes $78$% of Earth's atmosphere and is an important constituent of all living tissues