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The correct sequence of elements in decreasing order first ionisation energy isA. `NagtMggtAl`B. `MggtNagtAl`C. `AlgtMggtNa`D. `MggtAlgtNa` |
Answer» Correct Answer - D `Mg gt Al gtNa`. This is due to the presence of fully filled s-orbital in `Mg`. |
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