b
Second ionization potential depends on the electron ejection from \(Li ^{+}, Be ^{+}\)and \(B ^{+}\)

Electronic configuration for these ions is:

\(Li ^{+}: 1 s ^2\)

\(Be ^{+}: 1 s ^2\, 2 s ^1\)

\(B ^{+}: 1 s ^2\, 2 s ^2\)

For, lithium and boron, electron is to be ejected from fully filled stable shells.

Further, it is difficult to remove electron from is shell of \(Li\) because it is closer to the nucleus as compared to \(2 s\) shell of \(B\). It is much easier to remove electron from \(Be\) because it will attain stable electronic configuration after losing this electron.

Thus, order is \(Li \,> \,B\, >\, Be\)