1
Consider the following species: BrF5, XeF5-, BF4-, ICl4-, XeF4, SF4, NH4+, ClF3, XeF2, ICl2- Number of species having sp3d hybridized central atom is .
JEE Main 2026 (Online) 5th April Morning Shift
Chemical Bonding and Molecular Structure
Previous year questions with solutions · 2025 – 2026
35Questions
30Papers covered
4.63% ↑6.9%Weightage in 2026
’25
’26
Year-wise statistics questions · papers · average per paper · weightage
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 22 | 19 | 1.2 | 4.63% ↑6.9% |
| 2025 | 13 | 12 | 1.1 | 4.33% |
2
According to Lewis theory, the total number of bond-pairs and lone pair of electrons around the central atom of XeO64- ion is .
JEE Main 2026 (Online) 4th April Morning Shift
3
The sum of sigma ( ) and pi ( ) bonds in Hex-1,3-dien-5-yne is .
JEE Main 2025 (Online) 29th January Morning Shift
4
Total number of molecules/species from the following which will be paramagnetic is . O2, O2+, O2-, NO, NO2, CO, K2[NiCl4], [Co(NH3)6]Cl3, K2[Ni(CN)4]
JEE Main 2025 (Online) 28th January Evening Shift