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  • Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?

Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?

(i) \text {[Xe]} \text {4f}^{7} \text {5d}^{1} \text {6s}^{2}

(ii)  \text {[Xe]} \text {4f}^{6} \text {5d}^{2} \text {6s}^{2}

(iii) \text {[Xe]} \text {4f}^{8} \text {6d}^{2}

(iv) \text {[Xe]} \text {4f}^{9} \text {5s}^{1}

Answers (1)

The answer is the option (i) _{64}Gd:\text {[Xe]}4f^{7}5d^{1}6s^{2} is the correct electronic configuration of gadolinium that belongs to 4f series.

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infoexpert23

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