Which of the following hydrides has the lowest boiling point?
Correct answer: B. H2S
- A. H2O
- B. H2S
- C. H2Se
- D. H2Te
Explanation
Boiling points depend on intermolecular forces. H₂O has strong hydrogen bonding, giving it the highest boiling point. H₂S, H₂Se, and H₂Te have only van der Waals forces, which increase with molecular mass. Since H₂S is the lightest and has the weakest van der Waals forces, it has the lowest boiling point.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements 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.
More s-Block and p-Block Elements questions
Product of combustion of H2 is:
Which one of the following noble gases are used for providing an inert atmosphere for welding?
Very pure H2 (99.9%) can be made by which of the following processes?
Hydrogen combines directly with:
Which element is required for making Chlorophyll in Leaf?
H₂O₂ and heavy water were discovered by _ and _, respectively.