Choose the number of correct statement(s) form the following:
ist ionization potential of B is higher than that of Be
electron affinity of O is higher than that of S
[Ar] `4s^23d^3` is the electronic configuration of `Mn^(+2)`
Iind ionisation potential of Na>ist ionisation potential of Na
1st ionisation potential of N>IInd ionisation potential of N
electronegativity of Cl>electronegativity of F
`C rarr C^+2` change is called IInd ionisation potential of carbon
energy is required to convert `He rarr He^-`
conversion of `o rarr o^2`` exothermic

Answer

4