The first four I,E. values of an element are 284, 412, 656 and \( 3210 \mathrm{~kJ} \mathrm{~mol...

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The first four I,E. values of an element are 284, 412, 656 and \( 3210 \mathrm{~kJ} \mathrm{~mol}^{-1} \). The number of valence
\( \mathrm{P} \)
electrons in the element are:
W
(1) one
(2) two
(3) three
(4) four
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