Question

How much energy would be required by an electron while moving from ground state to 3rd excited state of He+ Jon.

Answer 1

Helloo!!

Third excited state n=4.

Energy of electron at third excited state= -13.6* Z^2/n^2 eV

= -13.6 x 4/16 eV= -3.4 eV

Energy at Ground state= -13.6 x 4/1
= -54.4 eV
Change= -3.4-(-54.4) eV= 51eV.

hope it helps!!

Answer 2

Answer:

How much energy would be required by an electron while moving from the ground state to the 3rd excited state of He+ Jon?

Explanation:

Therefore, the energy of the electron in the ground state is −13.6eV. Therefore, the energy required to move electrons from the ground state to the third excited state is 12.75eV.

3rd excited state means 4th orbit

Given-

He+ e- = 1st to 4 th (3rd excited state0

E= -13.6 Z2/n2

E3 = 1 = -13.6(2)2{1/(4)2-1/(1)2}

          = -13.6 × 4{ 1/16-1}

          = -13.6× 4 × -15/16.

  E3  = 51 ev.

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