Question

B. Ionization enthalpy of Li is 520 kJ mol!
while that of F- is 1681 kJ mol"!. Explain.​

Answer 1

Answer:

Both Li and F belong to period 2. ... As a result, the outer electron is held more tightly, and therefore, the ionization enthalpy increases across a period. Hence, F will have higher ionization enthalpy than Li. Thus, the ionization enthalpy of Li is 520 kJ mol-1 while that of F is 1681 kJ mol-1.