Question
The first ionisation potentials $(eV)$ of $Be$ and $B$ respectively are :-
✓
Answer
d
The first ionization potentials $(e V)$ of $B e$ and $B$ respectively are $9.32,8,29 .$
The first ionization potentials $(e V)$ of $B e$ and $B$ respectively are $9.32,8,29 .$
According to theory as we move from lest to right in a period the ionization potential should increase but in case of $B e$ and $B$ Beryllium is having more ionization potential than Boran due to completely filled s orbital in Beryllium $\left(1 s^{2} 2 s^{2}\right)$.
Hence option D is correct.
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