Correct order of melting point of group IIA elements is:
Correct answer: A. Be > Ca > Mg
- A. Be > Ca > Mg
- B. Ca>Be>Mg
- C. Mg > Be > Ca
- D. Be>Mg> Ca
Explanation
The correct order of melting points for group IIA elements is Be > Ca > Mg. This is because the melting and boiling points decrease from top to bottom in group IIA elements due to the increase in atomic sizes, leading to weaker binding forces between larger atoms compared to smaller atoms. Therefore, beryllium has the highest melting point, followed by calcium and then magnesium. The other options are incorrect because they do not follow this trend in melting points based on atomic size.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Reactions of Group II Elements
Group II reactions cover the behaviour of beryllium, magnesium, calcium, strontium and barium with water, oxygen, halogens, acids and nitrogen. The trends in reactivity, hydroxide solubility and basicity, along with the thermal decomposition of carbonates and nitrates, depend on increasing atomic size down the group.
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 Reactions of Group II Elements questions
Strontium lies between calcium and barium in group lIA in the Periodic Table. Which of the following properties could be predicted for strontium?
Which of the following hydroxides of group II elements is least soluble in water?
The only alkaline earth metal which releases H2 gas when reacted with alkalies is:
Which one of the following doesn't react with water even at red hot temperature?
Which is a good metal?
Solubility of IIA elements Hydroxides _ the group