Home Chemistry Structure of Atom General Which of the following statement(s) is (are)…
Chemistry Structure of Atom General Single Correct MCQ
Published on: August 12, 2026

Which of the following statement(s) is (are) correct?

A
The electronic configuration of Cr is [Ar] (3d)5 (4s)1. (Atomic number of Cr = 24)
B
The magnetic quantum number may have negative values.
C
In silver atom, 23 electrons have a spin of one type and 24 of the opposite type. (Atomic number of Ag = 47)
D
None of these

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Text Solution

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The correct answer is:
CHECK THE SOLUTION.

(a, b, c)

24Cr : [Ar]3d54s1

m = – to + through zero.

47Ag : 1s22s22p63s23p64s23d104p65s14d10.

Since only one unpaired electron is present.

23 electrons have spin of one type and 24 of the opposite type.

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