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  4. If the atomic number of an element is 33, it will be placed in the periodic table in the

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Q. If the atomic number of an element is 33, it will be placed in the periodic table in the

AIPMTAIPMT 1993Classification of Elements and Periodicity in Properties

Solution:

The electronic configuration of element with
atomic number 33 is $1s^2, 2s^2 2p^6, 3s^2 3p^6$,
$4s^2, 3d^{10}, 4p^3$. As, its last shell have five electrons
and hence, its group is 10 + 5 = 15th or V A.