Question 1: Covalent Bonding and Lewis Structures
The formal charge on the central oxygen atom in ozone (O₃) is:
- A +1
- B +2
- C −1
- D 0
Answer: A. +1
Why: The central oxygen has one lone pair, two electrons in a double bond and one single bond.
Chemical Bonding is a Class 11 Chemistry chapter that carries about 5.7% of the Chemistry questions in NEET. Practise it with 53 questions covering 6 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Chemical Bonding had 47 questions, about 3.6 a year. The most in one paper was 7, in NEET 2016.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 2 |
| NEET 2025 | 2 |
| NEET 2024 | 5 |
| NEET 2023 | 5 |
| NEET 2022 | 4 |
| NEET 2021 | 3 |
| NEET 2020 | 2 |
| NEET 2019 | 1 |
| NEET 2018 | 5 |
| NEET 2017 | 4 |
| NEET 2016 | 7 |
| Re-AIPMT 2015 | 4 |
| AIPMT 2014 | 3 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
The formal charge on the central oxygen atom in ozone (O₃) is:
Answer: A. +1
Why: The central oxygen has one lone pair, two electrons in a double bond and one single bond.
Hydrogen bonding is present in:
Answer: D. methanol (CH₃OH)
Why: It needs an H attached to a highly electronegative atom such as O, N or F.
Ionic compounds generally:
Answer: A. have high melting points and conduct electricity in the molten state
Why: The ions are free to move only when the compound is molten or dissolved.
According to molecular orbital theory, a bond order of zero indicates that the molecule is:
Answer: B. unlikely to exist
Why: A bond order of zero means the number of electrons in bonding and antibonding orbitals is equal, indicating no net bonding — such a molecule (e.g., He2) is generally unstable and unlikely to exist.
The shape of SF₄ is:
Answer: D. see-saw
Why: Five electron pairs (4 bond pairs and one lone pair) give a trigonal bipyramidal arrangement with a see-saw shape.
The percentage of s-character in sp, sp² and sp³ hybrid orbitals is respectively:
Answer: D. 50%, 33% and 25%
Why: The s-character is 1/(number of hybridising orbitals).
Which of the following species does NOT obey the octet rule?
Answer: A. SF₆
Why: Sulphur has 12 electrons around it in SF₆.
Which of the following has a zero dipole moment?
Answer: D. CCl₄
Why: The tetrahedral arrangement of four equal bond dipoles cancels.
Chemical Bonding carries about 5.7% of the Chemistry questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 47 times, about 3.6 questions a year.
Chemical Bonding is a Class 11 Chemistry chapter in the NCERT syllabus.
NeetVictory has 53 practice questions on Chemical Bonding, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.