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JEE Main 01-Feb-2024 Paper - Shift 1 — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEEJEE Main 01-Feb-2024 Paper - Shift 14 Marks
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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