Given below are two statements: Statement (I): A solution of [ Ni… - Vidyadip

MCQ

Given below are two statements:
Statement (I): A solution of $\left[ Ni \left( H _2 O \right)_6\right]^{2+}$ is green in colour.
Statement (II): A solution of $\left[ Ni ( CN )_4\right]^{2-}$ is colourless.
In the light of the above statements, choose the most appropriate answer from the options given below:

A
Both Statement I and Statement II are incorrect
✓
Both Statement I and Statement II are correct
C
Statement I is incorrect but Statement II is correct
D
Statement I is correct but Statement II is incorrect

✓

Answer

Correct option: B.

Both Statement I and Statement II are correct

(B) $\left[ Ni \left( H _2 O \right)_6\right]^{+2} \rightarrow$ Green colour solution due to d-d transition. $\left[ Ni ( CN )_4\right]^{-2} \rightarrow$ is diamagnetic and it is colourless.

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