Medium
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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