Question

The first ionization energy of li,be,b and c are in order

Answer 1

Ionization Energy is the Energy Required to Remove an Electron

Element Electron Configuration First Ionization Energy IE1

Lithium (Li) [He]2s1 520 kJ/mol

Beryllium (Be) [He]2s2 899 kJ/mol

Boron (B) [He]2s22p1 801 kJ/mol

Carbon (C) [He]2s22p2 1086 kJ/mol