Question

Among the following which is following variable valancy
b) Nitrogen
c) Sulphu
a) phosphorus
d) Sodium
d) Magnesium
a) Carbon​

Answer 1

Answer:

Copper shows variable valency as it is a d block element.

Thus, copper forms compounds containing Cu

+

ions or Cu

++

ions. Representative elements sodium, calcium and magnesium shows +1, +2 and +2 oxidation states respectively.

Explanation:

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Answer 2

Answer:

D) your answer

Explanation:

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