Mg has highest IE in the given options due to stable 3s² configuration.
Back to JEE Main 2023 Inorganic Chemistry
JEE Main 2023 — Chemistry Inorganic Chemistry
medium
mcq
2023
Official previous-year question
Verified 30 May 2026.
Question
Which of the following has the highest first ionization energy?
Options
- ANa
- BMg
- CAl
- DSi
Solution
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