energy of bonded atom of H is
a, positive
b, negative
c, zero
d, none of these.
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1
Negative
ΔH° for forming a mole of hydrogen from two hydrogen atoms is − 435 kJ mole− 1. Because energy is released in the reaction, the hydrogen molecule is more stable than two isolated hydrogen atoms. The reverse process, breaking the H—H bond, requires 435 kJ mole− 1, a quantity called the bond strength.
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Option d, none of these
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