\(T \rightarrow 2 T\)
\(M \rightarrow \frac{ M }{2}\)
\(V _{ rms } \propto \sqrt{\frac{ T }{ M }}\)
\(\Rightarrow\left(V_{\text {rms }}\right)_{\text {atomic }}=\left(V_{\text {rms }}\right)_{\text {molecular }} \times \sqrt{\frac{2}{1 / 2}}=2\left(V_{\text {ms }}\right)_{\text {molecular }}\)
$R =8.32\,J \,mol ^{-1} k ^{-1}$ લો.