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  • Which among the following electronic configuration indicates a d-block element?Option: 1 <img alt="\mathrm{[Xe] 4f^{14}5d^{10}6s^{2}6p^{5}}" src="/la

Which among the following electronic configuration indicates a d-block element?

Option: 1

\mathrm{[Xe] 4f^{14}5d^{10}6s^{2}6p^{5}}
 


Option: 2

\mathrm{[Xe] 4f^{3}6s^{2}}
 


Option: 3

\mathrm{[Xe] 6s^{2}}
 


Option: 4

\mathrm{[Xe] 5d^{1}6s^{2}}


Answers (1)

best_answer

In a d-block element, the last electron enters in d-subshell. The same is true for only

\mathrm{[Xe] 5d^{1}6s^{2}}.The element is Lanthanum.

Hence, it is d-block element.

Hence option 4 is correct .

Posted by

Gaurav

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