If ${V_H},\,\,{V_N}$ and ${V_O}$ denote the root-mean square velocities of molecules of hydrogen, nitrogen and oxygen respectively at a given temperature, then
  • A${V_N} > {V_O} > {V_H}$
  • B${V_H} > {V_N} > {V_O}$
  • C${V_O} = {V_N} = {V_H}$
  • D${V_O} > {V_H} > {V_N}$
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