JEE Main 2003 — Structure of Atom Question with Solution
JEE Main 2003
Question
Which one of the following groupings represents a collection of isoelectronic species? (At. nos,: 55, Br:35)
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
and contain 10 electrons each.
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Structure of Atom chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2003, covering the Structure of Atom 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.