Gas Detail View

Nitrogen (N₂)

⬅ Back to overview

Percentage in air

78%

Nitrogen makes up most of the air around us. It does not react easily, which helps keep the atmosphere stable and prevents oxygen from being too reactive.

Why so much Nitrogen?

Nitrogen is very stable. It does not burn or react easily, making it a “filler gas” that keeps oxygen levels safe.

Importance in nature

Plants need nitrogen to grow. They absorb nitrogen compounds from the soil, which are produced by bacteria and lightning.

Fun facts about Nitrogen

  • Liquid nitrogen is extremely cold (-196°C).
  • Used in medicine to freeze warts and preserve samples.
  • Makes up almost 4/5 of the entire atmosphere.
N
N
Diatomic molecule
Formula: N₂ • Stable • Non-reactive • Colorless gas

Quick Check

Can you master Nitrogen (N₂)?

Choose the best answer. You'll see instantly if you're right.

Question 1 / 1

Question

Why does nitrogen make up the largest part of Earth's atmosphere?

Tip: think back to the information above on this page. This quiz only uses facts you’ve already seen.