Atomic number 64 will have electronic configuration :

[X e]_{54} 6 s^{2} 4 f^{3}

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[X e]_{54} 6 s^{2} 4 f^{7} 5 d^{1}

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[X e]_{54} 4 f^{10}

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[X e]_{54} 6 s^{2} 4 f^{7} 5 p^{1}

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Solution

The correct option is B $[X e]_{54} 6 s^{2} 4 f^{7} 5 d^{1}$
Atomic no 64 (Gd) have exceptional configuration $[X e] 6 s^{2} 4 f^{7} 5 d^{1}$ . (Half filled stable configuration).

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Similar questions

The electronic configuration of gadolinium (Atomic number 64) is
(a) $[X e] 4 f^{3} 5 d^{5} 6 s^{2}$
(b) $[X e] 4 f^{7} 5 d^{2} 6 s^{1}$
(c) $[X e] 4 f^{7} 5 d^{1} 6 s^{2}$
(d) $[X e] 4 f^{8} 5 d^{6} 6 s^{2}$

Q. The electronic configuration of bivalent europium and trivalent cerium, are: (Atomic Number : Xe = 54, Ce = 58, Eu = 63)

The electronic configuration of Gd²⁺ is (at. No. of Gd is 64)

The electronic configuration of Eu³⁺ ion is:

Q. Number of non-bonding electron pairs on

X e

X e F_{6}, X e F_{4}

and

X e F_{2}

respectively will be:

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Atomic number 64 will have electronic configuration :

The correct option is B [Xe]546s24f75d1Atomic no 64 (Gd) have exceptional configuration [Xe]6s24f75d1. (Half filled stable configuration).

The correct option is B $[X e]_{54} 6 s^{2} 4 f^{7} 5 d^{1}$
Atomic no 64 (Gd) have exceptional configuration $[X e] 6 s^{2} 4 f^{7} 5 d^{1}$ . (Half filled stable configuration).