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Assertion (A): Copper exhibits variable ...

Assertion (A): Copper exhibits variable valency.
Reason (R): Copper loses two electrons from its valence shell and it can also lose one more electron from the second last shell.

A

Both A and R are true and R is the correct explanation For A.

B

Both A and R are true but R is not the correct explanation for A.

C

A is true and R is false.

D

A is false and R is true.

Text Solution

Verified by Experts

The correct Answer is:
3
Copper loses one electron from its valence shell to form `Cu^(+)` and can loss one more electron from second last shell to from `Cu^(2+)` ion.
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Knowledge Check

  • The noble gas having only two electrons in its valence shell is:

    A
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    B
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  • Assertion (A): Sodium forms a monovalent ion. Reason (R): Sodium loses only one electron from the second last shell.

    A
    Both A and R are true and R is the correct explanation for A.
    B
    Both A and R are true but R is not the correct explanation for A.
    C
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    A is false and R is true.

  • Assertion (A) : sodium formss a monovalent ion. Reason (R ) : Sodium loses only one electron from second last shell.

    A
    Both A and R are true and R is the correct explanation For A.
    B
    Both A and R are true but R is not the correct explanation for A.
    C
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    D
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