What common diatomic molecules exist in our atmosphere? What triatomic molecules exist in our atmosphere? Give the formulas for all your answers.

Diatomic molecules consist of two atoms bonded together. In the Earth's atmosphere, the common diatomic molecules are: 1. Nitrogen (N₂) – This is the most abundant molecule in the atmosphere, making up about 78% of the air. Nitrogen molecules consist of two nitrogen atoms bonded together. 2. Oxygen (O₂) – Another common diatomic molecule in the atmosphere, oxygen makes up approximately 21% of the air. Oxygen molecules consist of two oxygen atoms bonded together. 3. Hydrogen (H₂) – Although not as abundant as nitrogen and oxygen, hydrogen is also present in trace amounts in the atmosphere. Hydrogen molecules consist of two hydrogen atoms bonded together.

Triatomic molecules consist of three atoms bonded together. In the Earth's atmosphere, the common triatomic molecules are: 1. Water (H₂O) – Water vapor is present in varying amounts in the atmosphere. H₂O molecules consist of two hydrogen atoms bonded to a single oxygen atom. 2. Carbon Dioxide (CO₂) – This molecule is present in much lower concentrations than water vapor, but it plays a significant role in Earth's climate due to its ability to trap heat. CO₂ molecules consist of a single carbon atom bonded to two oxygen atoms. 3. Ozone (O₃) – Ozone is another important triatomic molecule in the Earth's atmosphere, especially in the stratosphere. Ozone molecules are formed by three oxygen atoms bonded together. In summary, the common diatomic molecules in our atmosphere are nitrogen (N₂), oxygen (O₂), and hydrogen (H₂); while the common triatomic molecules are water (H₂O), carbon dioxide (CO₂), and ozone (O₃).