Q11 / 160 · AP EAMCET 2019 (20 Apr Shift 1) · Chemistry

Which one of the following properties has same value for \(\mathrm{H}_2\) and \(\mathrm{D}_2\) ?

A
Density
B
Enthalpy of bond dissociation
Correct answer
C
Bond length
D
Melting point

Solution

Bond length depends upon the electrostatic force of attraction. Substituting a different isotope in the atom should not change the bond length. Since, the electrical environment around the isotope is identical.

Hence, the correct answer is option: 'C'.

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