Which of the following elements has greater melting and boiling point?
Correct answer: A. B
- A. B
- B. Al
- C. In
- D. Tl
Explanation
As you move down group IIIA, the size of the atoms increases, leading to weaker forces of attraction and lower melting and boiling points. B has greater melting and boiling points compared to Al, In, and Tl due to its larger size. Therefore, option A is correct. Options B, C, and D are incorrect as they have smaller sizes and stronger intermolecular forces, resulting in lower melting and boiling points.
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
The characteristic flame colour of sodium is:
Which of the following elements forms acidic oxide and shows diagonal relationship with silicon?
When a mixture of white solids Z, is treated with an excess of dilute hydrochloric acid, a colourless gas is evolved and some, (but not all) of the mixture dissolves:
Basic oxides react with acidic oxides to form:
Which of the following elements of IIA group shows more metallic character?
All of the carbonates of alkali metals do not decompose on heating EXCEPT: