Choose whether the given statement is true/false:

The valency of copper in Cuprous Chloride is 1.

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True

False

answer is A.

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Detailed Solution

The given statement is true.
Concept- Valency is the number of electrons an atom required to achieve a stable octet configuration. If the last shell contains more than 4 electrons, it accepts electrons otherwise it loses electrons for stability.
Now, the chemical formula for cuprous chloride is

CuCl

. We know that Copper belongs to the 4th period and 11th group in the periodic table.
The electronic configuration of Copper (atomic number 29 ) is -

[Ar] 3 d^{10} 4 s^{1}

. Thus copper attains its stable configuration by losing 1 electron.
Therefore, the valency of copper in cuprous chloride is 1
Thus, the given statement is true.
Hence, the correct option is (1).

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