In a period from Li to F, ionisation potential

Options

A. cannot be predicted
B. increases
C. decreases
D. remains same

Answer

A

Explanation

Ionization energy increases along a period with increase In atomic number. However, in the periodic table, going from left to right, while the Ionization Potential of Li is 5.4 eV, that of Be: 9.3 eV, B: 8.3 eV, C: 11.3 eV, N: 14.6 eV, O: 13.6 eV, and F: 17.0 eV.