Assertion:

 is named as tetrakis (ethylene-diammine)$\mathrm{\mu }-$hydroxo-m-imido dicobalt (III) ion.

Reason : In naming polynuclear complexes i.e., containing two or more metal atoms joined by bridging ligands, the word $\mathrm{\mu }$ is added with hyphen before the name of such ligands.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Which of the following is considered as an anticancer species?

Assertion : Al forms [AlF₆]^3- but B does not form [BF₆]^3-.

Reason : B does not react with fluorine.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false

Which of the following metal ions will form complexes with the same magnetic moment and geometry irrespective of the nature of ligands?

• Ni²⁺

• Fe²⁺

• Cu²⁺

• Co²⁺

Wavelength of red light is absorbed by the complex

• [Cu(CN)₄]^2-

• [Cu(NH₃)₄]²⁺

• CuSO₄

• Cu(CN)₂

In the change[Cu(H₂O)₆F]²⁺ $\stackrel{\mathrm{HCl}}{\to }$ [CuCl(H₂O)₅]⁺, the colour changes from

• blue to green

• blue to pink

• pink to green

• pink to blue

597.

Assertion : In high spin situation, configuration
of d⁵ ions will be ${\mathrm{t}}_{2\mathrm{g}}^3, {\mathrm{e}}_{\mathrm{g}}^2$.

Reason : In high spin situation, pairing energy is less than crystal field energy.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Which of the following does not contain any coordinate bond?

• H₃O⁺

• BF${}_4^{-}$

• HF${}_2^{-}$

• NH${}_4^{+}$

The pair in which both species have same magnetic moment (spin only value) is

• [Cr(H₂O)₆]²⁺,[CoCl₄]²⁺

• [Cr(H₂O)₆]²⁺,[Fe(H₂O)₆]²⁺

• [Mn(H₂O)₆]²⁺, [Cr(H₂O)₆]²⁺

• [CoCl₄]^2-, [Fe(H₂O)₆]²⁺

Which gives nucleophilic addition most easily :

• CH₃CHO

• CH₃CH₂CHO

• (CH₃)₂CHCHO

• HCHO