Skip to content
New summer mock series is live Attempt timed papers for SSC, banking, and engineering entrances with updated syllabi for this season. View exams

Question

Which element has the highest third ionization enthalpy among the following?

Options

Choose one · Correct answer highlighted

Explanation

Third ionization enthalpy is highest when removing an electron from a noble gas-like configuration. Mg (after losing two electrons, becomes Mg²⁺ with 1s² 2s² 2p⁶) has the highest value.