Which of the following is not the configuration of Lanthanide?

[X e] 4 f^{10} .6 s^{2}

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[X e] 4 f^{1} 5 d^{1} .6 s^{2}

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[X e] 5 d^{10} .6 s^{1}

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[X e] 5 d^{10} .6 s^{2} 4 f^{7}

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Solution

The correct option is D $[X e] 5 d^{10} .6 s^{1}$
Gold (Au) with $[X e] 5 d^{10} .6 s^{1}$ configuration belongs to d-block and not Lanthanide series.

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Similar questions

Q. The lanthanide element that has the electronic configuration

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

is:

The electronic configuration of Eu³⁺ ion is:

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

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) $[X e] 4 f^{8} 5 d^{6} 6 s^{2}$

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

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Which of the following is not the configuration of Lanthanide?

The correct option is D [Xe]5d10.6s1Gold (Au) with [Xe]5d10.6s1 configuration belongs to d-block and not Lanthanide series.

The correct option is D $[X e] 5 d^{10} .6 s^{1}$
Gold (Au) with $[X e] 5 d^{10} .6 s^{1}$ configuration belongs to d-block and not Lanthanide series.