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As 1s electrons are closer to the nucleus than 2s electrons,they experience higher
nuclear charge(i.e.,they are highly bound to atom than 2s electrons).so,2s electrons can easily
escape from nucleus and can form Be2+(since it is stable configuration,He) but 1s electrons
cannot escape from nucleus.
Solution
As 1s electrons are closer to the nucleus than 2s electrons,they experience higher
nuclear charge(i.e.,they are highly bound to atom than 2s electrons).so,2s electrons can easily
escape from nucleus and can form Be2+(since it is stable configuration,He) but 1s electrons
cannot escape from nucleus.

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As 1s electrons are closer to the nucleus than 2s.pdf

  • 1. As 1s electrons are closer to the nucleus than 2s electrons,they experience higher nuclear charge(i.e.,they are highly bound to atom than 2s electrons).so,2s electrons can easily escape from nucleus and can form Be2+(since it is stable configuration,He) but 1s electrons cannot escape from nucleus. Solution As 1s electrons are closer to the nucleus than 2s electrons,they experience higher nuclear charge(i.e.,they are highly bound to atom than 2s electrons).so,2s electrons can easily escape from nucleus and can form Be2+(since it is stable configuration,He) but 1s electrons cannot escape from nucleus.