Question

The energy needed to remove one electron from unipositive ion is abbreviated as_________.

• A. $I^{st}I.P.$
• B. $3^{rd}I.P.$
• C. $2^{nd}I.P.$
• D. $1^{st}E.A.$

Answer 1

Answer: (C)

$2^{nd}I.P.$

The energy needed to remove one electron from uni-positive ion is abbreviated as $2^{nd}I.P.$. It is second ionization potential or second ionization energy.
For example, the energy for the process $M{g}^{+}\to M{g}^{2+}+e^{-}$ is second ionization potential.