The ionization energy of boron is less than that of \( \mathrm{P} \) beryllium because: W (1) Be...

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The ionization energy of boron is less than that of
\( \mathrm{P} \)
beryllium because:
W
(1) Beryllium has a higher nuclear charge than boron
(2) Beryllium has a lower nuclear charge than boron
(3) The outermost electron in boron occupies a 2 p-orbital
(4) The \( 2 \mathrm{~s} \) and \( 2 \mathrm{p} \)-orbitals of boron are degenerate
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