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The seven diatomic molecules are hydrogen, nitrogen, oxygen, fluorine, chlorine, iodine, and bromine. This means that whenever they are in a balanced equation, they will have two such as H₂ (hydrogen) or N₂ (nitrogen).
2Na+2HCl --> 2NaCl+H If you look, your equation is not balanced. There are 2 sodiums and 2 chlorines on both sides, however there are 2 hydrogens on the left and 1 hydrogen on the right. Since hydrogen is a diatomic molecule, it is not allowed to be in the form "H" on the right. I'm assuming before it looked like "H₂" (the correct form) but the computer took out the subscript.
Therefore, hydrogen is the diatomic molecule in this equation.

Answered by iloveonedirection | 2024-06-10

The diatomic molecule in the equation 2 Na + 2 HCl → 2 NaCl + H 2 ​ is hydrogen, represented as H 2 ​ . This is because hydrogen naturally exists as a diatomic molecule composed of two hydrogen atoms. We identify these molecules by remembering common diatomic elements such as H₂, N₂, O₂, and others.
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Answered by iloveonedirection | 2024-12-23

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Answered by Afkariim | 2025-07-06