Which of the following atoms in its ground state has the highest number of unpaired electrons? (Atomic numbers are given in brackets)

Question

Which of the following atoms in its ground state has the highest number of unpaired electrons? (Atomic numbers are given in brackets) (A) Chromium (24)  (B) Iron (26)  (C) Manganese (25)  (D) Vanadium (23)

Tardigrade Admin · Accepted Answer

Chromium (3d5 4s-1)-6 unpaired electrons Iron (3d64s2)-4 unpaired electrons Manganese (3d54s2)-5 unpaired electrons Vanadium (3d33s2)-3 unpaired electrons

Q. Which of the following atoms in its ground state has the highest number of unpaired electrons?
(Atomic numbers are given in brackets)

Chromium $(24)$

Iron $(26)$

Manganese $(25)$

Vanadium $(23)$

Chromium $(3 d^{5} 4 s^{- 1}) - 6$ unpaired electrons
Iron $(3 d^{6} 4 s^{2}) - 4$ unpaired electrons
Manganese $(3 d^{5} 4 s^{2}) - 5$ unpaired electrons
Vanadium $(3 d^{3} 3 s^{2}) - 3$ unpaired electrons

Q. Which of the following atoms in its ground state has the highest number of unpaired electrons? (Atomic numbers are given in brackets)

Chromium (24)

Iron (26)

Manganese (25)

Vanadium (23)