Isoelectronic and Isostructural Species
Isoelectronic species have the same number of electrons, while isostructural species share the same molecular geometry.
Why this shows up in the exam
You may need to identify or compare such species using electron count and VSEPR theory.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
Which of the following two are isostructural?
Push further
More challenging22 harder questions built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.
Identify the pair of compounds that are isostructural.
More from Chemical Bonding and Molecular Structure
Molecular Orbital Theory
Molecular Orbital (MO) Theory explains bonding in molecules by combining atomic orbitals to form molecular orbitals, predicting bond order, magnetism, and stability.
Hybridization and Molecular Shape
Hybridization describes the mixing of atomic orbitals to form new hybrid orbitals, determining molecular geometry and bond angles.
VSEPR Theory and Molecular Geometry
Valence Shell Electron Pair Repulsion (VSEPR) theory predicts molecular shapes based on electron pair repulsions around the central atom.
Bond Length, Bond Order, and Related Properties
Bond order indicates the number of chemical bonds between a pair of atoms, influencing bond length, strength, and stability.
Sigma and Pi Bonds
Sigma (σ) and pi (π) bonds are types of covalent bonds formed by different orbital overlaps, affecting molecular structure and reactivity.
Molecular Polarity and Dipole Moment
Molecular polarity arises from differences in electronegativity and molecular geometry, quantified by the dipole moment.