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Chemistry-Ionization Energy

NEET Chemistry Ionization Energy MCQ Question

Type: MCQ-numerical-Hard-Class 11

Calculate the ionization enthalpy of atomic hydrogen in kJ mol⁻¹, given that the energy of an electron in the ground state of a hydrogen atom is -2.18×10⁻¹⁸ J.

A

1312 kJ mol⁻¹

B

1040 kJ mol⁻¹

C

1500 kJ mol⁻¹

D

400 kJ mol⁻¹

Correct Answer

Option A

Detailed Explanation

The ionization enthalpy can be calculated by converting the given energy from J to kJ and then using Avogadro's number to find the value per mole. The conversion yields approximately 1312 kJ mol⁻¹.

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