Which element from the following has the highest ionization energy? - Noon Academy

Which element from the following has the highest ionization energy?

Chemistry | Class 10 | ICSE | Periodic Table, Periodic Properties and Variations of Properties | Selina

Which element from the following has the highest ionization energy?

(a) P, Na, Cl

(b) F, O, Ne

(c) Ne, He, Ar

Explain your choice.

Answers:

(a) Cl has the highest ionization energy.

Normally, non-metals have high ionisation energy when compared to the metals. When we go across the period, ionisation energy increases.

(b) Ne has the highest ionization energy.

Because of the constant electronic configuration of inert gases the electron affinity is zero

(c) He has the highest ionization energy.

When the atomic size increases, the ionization energy decreases as we go in the group downwards.

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