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 2NH3−>N2 (O.S. = -3) (O.S. = 0) Thus each N atom (or each NH3 molecule) loses 3 electrons.