JEE Main 2026 · 5 Apr · Shift 2 · Chemistry Q53

ChemistrySingle correct+4 / -1Question 53 of 75

The covalent radii of atoms A and B are $r_A$ and $r_B$ , respectively. The covalent bond length and total length of AB molecule are respectively

(r_A+r_B)

2(r_A+r_B)

\dfrac12(r_A+r_B)

(r_A+r_B)

(r_A+r_B)

(r_A+r_B)

2(r_A+r_B)

\dfrac12(r_A+r_B)

Answer and worked solution

Official answer: A

Bond length. The covalent bond length is the sum of the covalent radii, $r_A+r_B$ .

Total length. The molecule extends a further $r_A$ beyond A and $r_B$ beyond B. So the total is $r_A+(r_A+r_B)+r_B=2(r_A+r_B)$ .

(A)

Topics:Bond parameters and dipole moment

JEE Main 2026 · 5 Apr · Shift 2, Chemistry question 53