Question

The covalent radius of hydrogen is $0.37A^{\circ }$. The bond length in $H_2$ molecule is:

• A. $0.185A^{\circ }$
• B. $0.74A^{\circ }$
• C. $1.48A^{\circ }$
• D. $0.37A^{\circ }$

Answer 1

The correct option is B $0.74A^{\circ }$

covalent radius of hydrogen is measured using the bond length of $H_2$ molecule . covalent radius $=\frac{1}{2}\times bondlength$ .therefore bond length$=2\times covalentradius$. $\therefore bondlength=2\times 0.37A^0$ .$\therefore bondlength=0.74A^0$