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What is the ionization energy of hydrogen in eV? (2019)

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Question: What is the ionization energy of hydrogen in eV? (2019)

Options:

  1. 1.51 eV
  2. 13.6 eV
  3. 3.4 eV
  4. 10.2 eV

Correct Answer: 13.6 eV

Exam Year: 2019

Solution: 

The ionization energy of hydrogen is 13.6 eV, which is the energy required to remove the electron from the ground state.

What is the ionization energy of hydrogen in eV? (2019)

Practice Questions

Q1
What is the ionization energy of hydrogen in eV? (2019)
  1. 1.51 eV
  2. 13.6 eV
  3. 3.4 eV
  4. 10.2 eV

Questions & Step-by-Step Solutions

What is the ionization energy of hydrogen in eV? (2019)
  • Step 1: Understand what ionization energy means. It is the energy needed to remove an electron from an atom.
  • Step 2: Know that hydrogen has one electron.
  • Step 3: The ground state of hydrogen is when the electron is closest to the nucleus.
  • Step 4: The energy required to remove this electron from the ground state is known as the ionization energy.
  • Step 5: For hydrogen, this energy is measured to be 13.6 electron volts (eV).
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