The ionization energy for a hydrogen atom is 1.31×106 j/mol. what is the ionization energy for he+?

The ionization energy for is .

Further explanation:

Ionization energy:

It is the amount of energy needed for removal of the most loosely bound valence electrons from the isolated neutral gaseous atom. It is usually denoted by IE. It depends on the ease of electron removal from neutral atoms. More is the ease of electron removal, less is the ionization energy and vice-versa.

The expression for Rydberg equation is as follows:

                                                       …… (1)

Where,

is the energy difference between two energy levels.

is Rydberg constant.

is the lower energy level.

is the higher energy level.

Since is formed by removal of one electron from neutral He atom, it has left with only one shell and therefore principal quantum number becomes 1.

Substitute 1 for , for and for  in equation (1) to calculate ionization energy for ion.

Therefore the value of ionization energy for ion is .

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Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Periodic classification of elements

Keywords: ionization energy, IE, energy, most loosely, isolated, neutral, atom, ionization energy, He+, n1, n2, energy difference, principal quantum number.

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