JEE Main 2013 — Chemical Bonding And Molecular Structure Question with Solution
From: JEE Main 2013 (Offline)
Question
Stability of the species Li2, and increases in the order of:
Choose an option
Show full solutionCorrect option: C
Correct answer
C < < Li2
Step-by-step explanation
Li2 =
Bond order = = 1
=
Bond order = = 0.5
=
Bond order = = 0.5
The bond order of and is same but is more stable than because is smaller in size and has 2 electrons in antibonding orbitals whereas has 3 electrons in antibonding orbitals. Hence is more stable than .
Bond order = = 1
=
Bond order = = 0.5
=
Bond order = = 0.5
The bond order of and is same but is more stable than because is smaller in size and has 2 electrons in antibonding orbitals whereas has 3 electrons in antibonding orbitals. Hence is more stable than .
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Chemical Bonding And Molecular Structure 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 2013, covering the Chemical Bonding And Molecular Structure 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.