Question

The ratio of the energy of electron in the ground state of hydrogen to the electron in the first excited state of Li2+ is:

Answer 1

Answer:

Li has 3 electrons. Li

2+

has one electron. It is a hydrogen-like atom. In the first excited state, the electron is in 2s orbital.

Its energy is E

n

=−13.6

n

2

Z

2

eV/atom.

E

2 =−13.6 2 2

3 2 =−30.6eV/atom

Explanation:

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