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QuestionChemistry

Which elements are diatomic?
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Step 1:
I'll solve this problem step by step, following the specified LaTeX formatting guidelines:

Step 2:
: Identify Diatomic Elements

Diatomic elements are elements that naturally exist as molecules containing two atoms of the same element. These elements form diatomic molecules in their standard state at room temperature.

Step 3:
: List the Diatomic Elements

The diatomic elements are found in the periodic table and can be remembered using the mnemonic "Have No Fear Of Explosive Nitrogen Gas" (H, N, F, O, Cl, Br, I):

Step 4:
H_{2} (Hydrogen)

2. $$N_{2}$$ (Nitrogen)

Step 5:
F_{2} (Fluorine)

4. $$O_{2}$$ (Oxygen)

Step 6:
Cl_{2} (Chlorine)

6. $$Br_{2}$$ (Bromine)

Step 7:
I_{2} (Iodine)

Step 8:
: Additional Context

These seven elements are the only pure elements that naturally exist as diatomic molecules at standard temperature and pressure.

Final Answer

The seven diatomic elements are Hydrogen (H_{2}), Nitrogen (N_{2}), Fluorine (F_{2}), Oxygen (O_{2}), Chlorine (Cl_{2}), Bromine (Br_{2}), and Iodine (I_{2}).