The Set Of Quantum Numbers N = 4, L = 0, M = 0 And S = +1/2 Corresponds To The Most Loosely Bound Ground State Electron Of Which One Of The Following Atoms?(A) Cl.(B) Cr.(C) Na.(D) Rb.

The correct answer is (B) Cr.

n = 4,l = 0,m = 0,x = + 1/2 set represents that the last electron enters in a 4s orbital.

Cr is the element, the last electron of which enters in a 4s orbital.

The electronic configuration of Chromium (Cr) = [Ar] 3d5 As1.

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