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JEE PYQ: Atomic Structure Question 4

Question 4 - 2021 (17 Mar Shift 1)

What is the spin-only magnetic moment value (BM) of a divalent metal ion with atomic number 25, in its aqueous solution?

(1). (5.92)

(2). (5)

(3). (zero)

(4). (5.26)

Show Answer

Answer: (1)

Solution

Mn$^{2+}$: [Ar]3d$^5$, 5 unpaired electrons. $\mu = \sqrt{5(5+2)} = \sqrt{35} = 5.92$ BM.


Learning Progress: Step 4 of 45 in this series