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D and F Block Elements question

2024 · Q110
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D and F Block Elements question

2024 · Q110

NEETChemistryD and F Block ElementsMCQ+4 / −1

Which of the following pairs of ions will have same spin only magnetic moment values within the pair?

A. Zn2+,Ti2+\mathrm{Zn}^{2+}, \mathrm{Ti}^{2+}Zn2+,Ti2+

B. Cr2+,Fe2+\mathrm{Cr}^{2+}, \mathrm{Fe}^{2+}Cr2+,Fe2+

C. Ti3+,Cu2+\mathrm{Ti}^{3+}, \mathrm{Cu}^{2+}Ti3+,Cu2+

D. V2+,Cu+\mathrm{V}^{2+}, \mathrm{Cu}^{+}V2+,Cu+

Choose the correct answer from the options given below :

  1. A
    C and D only
  2. B
    A and D only
  3. C
    A and B only
  4. D
    B and C only
View written solutionFree

Correct answer: D

Magnetic moment $$\mu=\sqrt{n(n+2)} B M$$

$$\mathrm{n} \Rightarrow$$ Number of unpaired electrons

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Ionn$\mu$(BM)
Zn$^{2+}$00
Ti$^{2+}$2$\sqrt8$
Cr$^{2+}$4$\sqrt{24}$
Fe$^{2+}$4$\sqrt{24}$
Ti$^{3+}$1$\sqrt3$
Cu$^{2+}$1$\sqrt3$
V$^{2+}$3$\sqrt{15}$
Cu$^{+}$00

Hence (Cr$^{2+}$, Fe$^{2+}$) and (Ti$^{3+}$, Cu$^{2+}$) are the pair of same magnetic moment.

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