Which of the following have highest ionisation energy?

_{1} H^{1}

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_{1} H^{2}

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_{1} H^{3}

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All of these have equal

I . E .

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Solution

The correct option is A $_{1} H^{1}$
Since the isotopes have the same electronic configuration they have almost the same chemicala properties. However, their physical properties differ consdierably due to their large masses.

From the table of atomic and physical properties of hydrogen table, (Refer NCERT Textbook for Class XI, Chapter 9)

The ionization enthalpy of Hydrogen = 1312 kJ/mol

Hence, $_{1}^{1} H$ has the highest ionization energy

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Similar questions

(_{1} H^{1})

(_{1} H^{2})

(_{1} H^{3})

m_{1} H^{1} = 1.007825 a m u

m_{1} H^{2} = 2.014102 a m u

m_{1} H^{3} = 3.016049 a m u

_{1} H^{2} +_{1} H^{2} \to_{1} H^{3} +_{1} H^{1}

10^{40}

_{1} H^{2} +_{1} H^{2} \to_{1} H^{3} +_{1} H^{1}

_{1} H^{2} +_{1} H^{3} \to_{2} H e^{4} +_{0} n^{1}

10^{16}

_{1} H^{1}

_{1} {H^{2}}^{2}

_{1} H^{3}

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