If ionization potential for hydrogen atom is 13.6eV, then ionization potential

If Ionization Potential For Hydrogen Atom Is 136ev Then Ionization Chemistry Question

If ionization potential for hydrogen atom is 13.6eV, then ionization potential for He⁺ will be

Options

(a) 54.4 eV
(b) 6.8 eV
(c) 13.6 eV
(d) 24.5 eV

Correct Answer:

54.4 eV

Explanation:

The ionization energy of any hydrogen like species (having one electron only) is given by the equation I.E = (2π²Z²me⁴)/h². Since the atomic number of H is 1 and that of He is 2, therefore,the I.E. of He⁺ is four times = Z²=(2²) the I.E. of H. So, 13.6 x 4= 54.4 eV

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Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Structure of Atom (90)
Subject: Chemistry (2512)

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