Question detail

Which of the following statements about the acid-base behavior of Period 3 oxides is correct?

Try the question, check the answer, then read the explanation to understand the curriculum point.

Show answer Topic hub Objective page

At a glance

MCQ

Type

practice

Style

Topic

Properties of Period 3 elements and their oxides (A-level only)

Question

A. P4O10 is an acidic oxide.
B. Na2O is a strong acid.
C. MgO is a weak base.
D. SiO2 is a neutral oxide.

Answer

P4O10 is an acidic oxide.

Explanation

The correct option is P4O10 is an acidic oxide.. P4O10 is an acidic oxide. is the best answer because it directly supports the AQA A-Level Chemistry objective to explain melting point trends of Period 3 oxides. This reasoning is anchored to Period 3 oxides (A-level only) in Properties of Period 3 elements and their oxides (A-level only), and it separates Period 3 oxide from similar A-Level ideas rather than relying on a vague recall statement. Other options are weaker if they use the wrong evidence, calculation, mechanism, observation, unit, or conclusion for this subtopic.

Common mistake

Misunderstanding Bonding Types

Students often confuse the types of bonding in Period 3 oxides, thinking that all oxides have ionic bonding.

Remember that Period 3 oxides can have different types of bonding. For example, SiO2 has covalent bonding, while Na2O has ionic bonding. Review the specific bonding characteristics of each oxide. Keep the correction anchored to Period 3 oxides (A-level only) and the objective: Explain melting point trends of Period 3 oxides.

Related flashcards

Flashcard 1 of 5

Press Space to flip, arrows to move