Question
Identify the number of lone pair and bond pair electrons present in the valence shell of central atom in BrF _3.
MHT CET
Chemistry
Chemical Bonding and Molecular Structure
2026
MHT CET 2026 (17 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 1 _ Lone pair and 2 _ Bond pair of electrons
- B. 2 _ Lone pair and 2 _ Bond pair of electrons
- C. 2 _ Lone pair and 3 _ Bond pair of electrons
- D. 1 _ Lone pair and 3 _ Bond pair of electrons
Answer
C. 2 _ Lone pair and 3 _ Bond pair of electrons
Step-by-step solution
The central atom in BrF _3 is Bromine ( Br ). Number of valence electrons in Br = 7. Bromine forms 3 single bonds with 3 Fluorine atoms. Therefore, the number of bond pairs is 3. Number of electrons used in bonding = 3. Remaining valence electrons on the central atom = 7 - 3 = 4. Number of lone pairs = 4 2 = 2. Thus, the central atom has 2 lone pairs and 3 bond pairs of electrons. Answer: 2 _ Lone pair and 3 _ Bond pair of electrons
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