Question

bond lengh of h2 is 0.074nm.bond length of cl2 is 1.98a.bond lenght of hcl is

Answer 1

rH2= 0.074nm/2=0.74A*/2=0.37A*

rcl2=1.98/2=0.99 A*

∴bond length of HCl=rH2+rCl2=0.37+0.99=1.36 A*

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Answer 2

Answer: The bond length of HCl is 0.136 nm.

Explanation:

We are given:

Bond length of hydrogen molecule = 0.074 nm

Bond length of chlorine molecule = $1.98\AA =0.0198nm$   (Conversion factor: $1nm=10\AA$ )

To calculate the bond length of HCl, we use the formula:

$l_{HCl}=\frac{l_{H_2}}{2}+\frac{l_{Cl_2}}{2}$

Putting values in above equation, we get:

$l_{HCl}=\frac{0.074}{2}+\frac{0.198}{2}\\\\l_{HCl}=0.136nm$

Hence, the bond length of HCl is 0.136 nm.