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- Engineering
- The first ionisation potentials of Na, Al & Mg are in the orderOption: 1 Na<Mg<AlOption: 2</s
- #Engineering
- #Classification of Elements and Periodic table
- #Chemistry
- #VIT Engineering Entrance Exam
The first ionisation potentials of Na, Al & Mg are in the order
Option: 1
Na<Mg<Al
Option: 2
Al<Mg<Na
Option: 3
Na<Al<Mg
Option: 4
Mg<Al<Na
Answers (1)
Mg has greater ionisation energy than Al due to configuration. It is more difficult to remove electrons from 3s orbital than for 3p orbital since s-orbitals have greater penetration power.
Na has very low ionization energy compared to Mg and Al , due to Na+ very stable.
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