Identify an element that has atomic number 7.

Correct option is D

The correct answer is (d) Nitrogen.
· The atomic number of an element corresponds to the number of protons in its nucleus.
· Nitrogen has an atomic number of 7, meaning it has 7 protons in its nucleus.
· Nitrogen is a diatomic molecule (N₂) in its natural form and is a major component of Earth's atmosphere, making up about 78% by volume.
Information Booster:
· Calcium (Ca): Has an atomic number of 20.
· Chlorine (Cl): Has an atomic number of 17.
· Oxygen (O): Has an atomic number of 8.