Exceptions to the octet rule (incomplete, odd-electron, expanded octet)
This type of question, asked 6 times: 25 Jun 2022, 29 Jul 2022, 29 Jan 2023, 8 Apr 2024, 23 Jan 2025, 6 Apr 2026 S2. All 6 questions below, oldest first.
Try each one first, then open its answer.
Question 1
25 Jun 2022
35Number of electron deficient molecules among the following and isTap an option to check your answer.
Question 2
29 Jul 2022
31Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule?Tap an option to check your answer.
Question 3
29 Jan 2023
57The number of molecules or ions from the following, which do not have odd number of electrons are (A) (B) (C) (D) (E) (F) NOQuestion 4
8 Apr 2024
56Number of molecules from the following which are exceptions to octet rule is ______ . ,Question 5
23 Jan 2025
44Match the LIST-I with LIST-IIChoose the correct answer from the options given below :LIST-I (Classification of molecules based on octet rule) LIST-II (Example) (A) Molecules obeying octet rule (I) (B) Molecules with incomplete octet (II) (C) Molecules with incomplete octet with odd electron (III) (D) Molecules with expanded octet (IV) Tap an option to check your answer.
Question 6
6 Apr 2026 S2
28Given below are two statements: Statement I: The number of compounds among and in which sulphur does not obey the Octet rule is 3 . Statement II : Among , and , , the number of sets in which all the molecules have one lone pair of electrons on the central atom is 1 . In the light of the above statements, choose the correct answer from the options given below :Tap an option to check your answer.