When two atoms combine to form molecule then generally:

energy is released

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energy is absorbed

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energy is neither released nor absorbed

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energy may either be released or absorbed

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Solution

The correct option is B energy is released
When two atoms combine to form a bond some heat is always released which is called as bond formation energy. Hence option A is correct.

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When two atoms combine to form molecule then generally:

The correct option is B energy is releasedWhen two atoms combine to form a bond some heat is always released which is called as bond formation energy. Hence option A is correct.

The correct option is B energy is released
When two atoms combine to form a bond some heat is always released which is called as bond formation energy. Hence option A is correct.