HSC - রসায়ন ২য় পত্র→অধ্যায়-০১ঃ পরিবেশ রসায়ন→All Topics

According to the kinetic theory of the gas,$\begin{array}{l}\text{i. } \mathrm{RMS} \text{ speed, } \mathrm c=\sqrt{\dfrac{3 \mathrm{RT}}{\mathrm{M}}}\\\text{ii. AVerage speed, } \overline{\mathrm{C}}= \mathrm {\sqrt{\dfrac{8 R T}{\pi M}}}\\\text{iii. Most probable speed, } \alpha=\mathrm {\sqrt{\dfrac{3 R T}{3 M}}}\end{array}$Which of the following is more appropriate?