The interatomic distances in H 2 and C l 2 molecules are 74 and 198 pm respectively. the bond length of HCL

Step-by-step solution

Interatomic distance in hydrogen H 2 molecule L H 2 = 74 pm and interatomic distance in chlorine C l 2 molecule L C l 2 = 198 p m . Atoms linked by one σ -bond, covalent radius r = I n t e r a t o m i c d i s t a n c e 2 . Therefore covalent radius of hydrogen r H = L H 2 2 = 74 2 = 37 pm and that of chlorine r C l = L C l 2 2 = 198 2 = 99 pm As H 2 g + Cl 2 g → 2 HCL g Therefore bond length of HCl molecule L H C l = r H + r C l = 37 + 99 = 136 pm.