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Question

Chemistry Question on p -Block Elements

When ammonia is heated with cupric oxide, a molecule of ammomia will

A

Gain 3 electrons

B

Lose 3 electrons

C

Gain 2 electrons

D

Lose 2 electrons

Answer

Lose 3 electrons

Explanation

Solution

2NH3+3CuO>N2+H20+3Cu {2NH_3 + 3CuO -> N2 + H20 + 3Cu } 2NH3>N2 {2NH3 -> N_2} (O.S. = -3) (O.S. = 0) Thus each N atom (or each NH3NH_3 molecule) loses 3 electrons.