English, asked by Anonymous, 1 year ago

second ionisation state of He?

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Answered by Anonymous

✌️✌️Sat sri akal✌️✌️

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1⃣He(g)→He+(g)+e− ➡️ ΔHIE1.

2⃣He+(g)→He2+(g)+e− ,➡️ΔHIE2.

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☺️As He+ is hydrogen-like, i.e. it has one electron, and is thus isoelectronic with H ... we can invoke Koopman's approximation theorem, which in simplified terms, state☺️

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