Question

Which of the following statements is/are true?

• A. K₂O has antifluorite structure
• B. In K₂O crystal, the potassium ions are coordinated to 4 oxide ions
• C. In K₂O crystal, the oxide ions are coordinated to 8 potassium ions
• D. K₂O is the simplest oxide of potassium and it is highly reactive

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A

K₂O has antifluorite structure

B

In K₂O crystal, the potassium ions are coordinated to 4 oxide ions

C

In K₂O crystal, the oxide ions are coordinated to 8 potassium ions

D

K₂O is the simplest oxide of potassium and it is highly reactive

In the chapter solid state, crystal lattice structures will be dealt with in greater detail. For now, it suffices to say that:

a)$K_{2}O$, the simplest oxide of potassium is highly reactive. In fact, it is rarely encountered except in some industrial applications. Its crystal structure is the exact opposite of $Ca{F}_2$.

b) In $K_{2}O$ crystal, the potassium ions are coordinated to 4 oxide ions

c) In $K_{2}O$ crystal, the oxide ions are coordinated to 8 potassium ions

So all options are correct: a) b) c)