The element having the electronic configurati | vedclass

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(C) The electronic configuration of the element is $[Kr] 4d^{10} 4f^{14} 5s^2 5p^6 5d^2 6s^2$.To determine the block,we look at the orbital being fill

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$d-$ block

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(C) The electronic configuration of the element is $[Kr] 4d^{10} 4f^{14} 5s^2 5p^6 5d^2 6s^2$.To determine the block,we look at the orbital being filled last or the orbital of the highest energy level.Here,the last electron enters the $5d$ orbital.According to the periodic table classification,elements in which the last electron enters the $d-$ orbital are known as $d-$ block elements.Therefore,the element belongs to the $d-$ block.

The element having the electronic configuration $[Kr] 4d^{10} 4f^{14} 5s^2 5p^6 5d^2 6s^2$ belongs to

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