In which of the following the central atom has least no. of Ione pair of electrons?
Correct answer: D. PbCl4
- A. HClO3
- B. H2S
- C. H3O+
- D. PbCl4
Explanation
In PbCl4, the central atom lead (Pb) uses all its available valence electrons to form bonds with four chlorine atoms, resulting in no lone pairs on the central atom. In contrast, HClO3 has a central chlorine atom with one lone pair, H2S has a central sulfur atom with two lone pairs, and H3O+ has a central oxygen atom with one lone pair. Therefore, PbCl4 has the least number of lone pairs on its central atom, making it the correct answer.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Chemical Bonding
Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
Practise Chemical Bonding
964 free Chemical Bonding MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.