Question

what is the valency of Cu in CuO AND Cu2O ?

Answer 1

Copper - Symbol - Cu.
It is a transition metal with variable valency.
Atomic number - 29
ELECTRONIC CONFIGURATION:
1S2 2S2 2P6 3S2 3P6 4S1 3d10
As d orbital electrons are tightly bound, so copper has variable valency.
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IN CASE OF CUO: Cupric Oxide or Copper (II) oxide.
Copper valency is 2.
IN CASE OF Cu2O : cuprous Oxide or copper (I) Oxide
Copper valency is 1.
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Answer 2

Answer:

in case of CuO Valency of cu is 2

and in case of Cu2O Valency of cu is 1

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