When 2 hydrogen atoms combine to form $H_{2}$ molecule, the system ______ .

becomes stable and bond is covalent in nature.

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becomes unstable

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becomes stable and bond is ionic in nature.

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becomes unstable and bond is metallic in nature.

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Solution

The correct option is A becomes stable and bond is covalent in nature.
Hydrogen has atomic number 1. So it has one electron and 1 proton. So to complete it's octet it need one more electron. So, to become stable it forms hydrogen molecule by sharing it's electron with another H atom and thus forms a covalent bond.

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When 2 hydrogen atoms combine to form H2 molecule, the system ______ .

When 2 hydrogen atoms combine to form $H_{2}$ molecule, the system ______ .