JEE Main 2023 — Chemical Bonding And Molecular Structure Question with Solution
From: JEE Main 2023 (Online) 15th April Morning Shift
Question
Consider the following statements:
(A) NF3 molecule has a trigonal planar structure.
(B) Bond length of is shorter than .
(C) Isoelectronic molecules or ions have identical bond order.
(D) Dipole moment of is higher than that of water molecule.
Choose the correct answer from the options given below:
(A) NF3 molecule has a trigonal planar structure.
(B) Bond length of is shorter than .
(C) Isoelectronic molecules or ions have identical bond order.
(D) Dipole moment of is higher than that of water molecule.
Choose the correct answer from the options given below:
Choose an option
Show full solutionCorrect option: C
Correct answer
C(B) and (C) are correct
Step-by-step explanation
The correct answer is (B) and (C).
(A) NF3 molecule has a trigonal pyramidal structure, not a trigonal planar structure. Therefore, statement (A) is false.
(B) The bond length of is shorter than that of due to the smaller atomic radius of nitrogen compared to oxygen. Therefore, statement (B) is true.
(C) Isoelectronic molecules or ions have the same number of electrons and hence the same bond order. Therefore, statement (C) is true.
(D) The dipole moment of water () is higher than that of due to the greater electronegativity of oxygen compared to sulfur. Therefore, statement (D) is false.
(A) NF3 molecule has a trigonal pyramidal structure, not a trigonal planar structure. Therefore, statement (A) is false.
(B) The bond length of is shorter than that of due to the smaller atomic radius of nitrogen compared to oxygen. Therefore, statement (B) is true.
(C) Isoelectronic molecules or ions have the same number of electrons and hence the same bond order. Therefore, statement (C) is true.
(D) The dipole moment of water () is higher than that of due to the greater electronegativity of oxygen compared to sulfur. Therefore, statement (D) is false.
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This is a previous-year question from JEE Main 2023, covering the Chemical Bonding And Molecular Structure chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.