The molecules of CO2 in dry ice form__________________?
Correct answer: C. Molecular crystal
- A. Ionic crystal
- B. Covalent crystal
- C. Molecular crystal
- D. Any type of crystal
Explanation
Dry ice is solid carbon dioxide, and its individual CO2 molecules remain intact in the solid. The molecules are held together by weak intermolecular forces, so dry ice forms a molecular crystal rather than an ionic or covalent network crystal. The likely mistake is choosing covalent crystal because CO2 contains covalent bonds, but the crystal classification depends on the forces between particles.
Last updated
About Ionic and Molecular Crystals
Ionic crystals contain oppositely charged ions held by electrostatic forces, whereas molecular crystals contain discrete molecules joined by weaker intermolecular forces. Their structures explain differences in melting point, hardness, volatility, solubility and electrical conductivity, especially between solid and molten states.
Practise Solids
357 free Solids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A solid melts sharply just above 100 degree centigrade. It does not conduct electricity even when molten. It has weak Vander waal's forces. What is the structure of the solid most likely to be?
All3 (Aluminium Iodide) is electrically a _
Among halogens, iodine is solid at room temperature while Br2 is liquid and CI and F are gases at room temperature, why?
An example of a non-polar molecular crystal is _.
Boiling Points of Polar Molecular solids are