Q48 / 180 · NEET 2018 · Chemistry

Match the metal ions given in Column 'I' with the spin magnetic moments of the ions given in Column 'II'.
Column I Column II
a. Co3+  i. 8 B.M.
b. Cr3+ ii. 35 B.M.
c. Fe3+ iii. 3 B.M.
d. Ni2+ iv. 24 B.M.
  v. 15B.M

  • A
    abciviii    diii
  • B
    abciiivi    dii
  • C
    abciiiiii    div
  • Correct answer
    D
    abcivvii    di

Solution

Magnetic moment μ=nn+2 B.M.

(i) Co3+→1s22s22p63s23p64s03d6

Figure

n=4

μ= 44+2=24 B.M.

(ii) Cr+3→1s22s22p63s23p64s03d3

Figure

n=3

μ= 33+2= 15 B.M.

(iii) Fe3+→1s22s22p63s23p64s03d5

Figure

n=5

μ= 55+2= 35 B.M.

(iv) Ni+2→1s22s22p63s23p64s03d8

Figure

n=2

μ= 22+2= 8 B.M.

Hence, the correct answer is option: 'D'.

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