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Question

If the valence electron configuration of this element is xs26fy and 7dz, then find out the value of x, y and z :

A
x=8,y=14,z=10
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B
x=7,y=12,z=10
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C
x=9,y=10,z=10
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D
None of the above
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Solution

The correct option is A x=8,y=14,z=10
The element belongs to eight period so, n=8 i.e. x=8
Since both y and z corresponds to d and f orbital which can accommodate a maximum of 10 and 14 electrons, then y and z are 10 and 14 respectively.

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