Question
What is the proportionality between (I) Bond length and size of atom (II) Bond length and multiplicity of bond respectively?
MHT CET
Chemistry
Chemical Bonding and Molecular Structure
2026
MHT CET 2026 (20 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. (I)- direct (II)- inverse
- B. (I)- direct (II)- direct
- C. (I)-inverse (II)-direct
- D. (I)-inverse (II)-inverse
Answer
A. (I)- direct (II)- inverse
Step-by-step solution
Bond length is the equilibrium distance between the nuclei of two bonded atoms in a molecule. As the size of the bonded atoms increases, the distance between their nuclei increases. Thus, bond length is directly proportional to the size of the atom. Bond multiplicity refers to the number of bonds between two atoms (single, double, triple). As bond multiplicity increases, the bond becomes stronger and the atoms are pulled closer together, decreasing the bond length. Thus, bond length is inversely proportional to the multiplicity of the bond. Hence, (I) is direct and (II) is inverse. Answer: (I)- direct (II)- inverse
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