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Question

The electronic configuration of dipositive ion is [Kr] 4d105s25p2. Then atomic number of the element is .........

A
38
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B
53
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C
50
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D
82
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Solution

The correct option is C 50
No. of electrons in the dipositive ion =36+10+2+2=50
Atomic number of element = 50+2=52

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