Ionic compounds usually have:
ALow melting points
BHigh melting points
CNo fixed melting point
DMelting points below 0 C
Answer & Solution
Correct answer: A. Low melting points
1. Ionic crystals are held together by strong electrostatic forces.
2. Breaking these forces needs lots of energy.
3. So ionic solids have very high melting points (often >800 K).
4. NaCl melts at about 1074 K.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 2 'Chemical Bonding'_
Related questions
The property of attracting shared electrons by halogen atoms in a molecule is called:In an electrovalent (ionic) compound MgCl2, magnesium and chlorine ions exist as:Which is the BEST example of a metallic bond?Why are giant covalent crystals (like diamond) very hard?Which property of water is due to hydrogen bonding?Which molecule features hydrogen bonding?CO2 has polar bonds yet is non-polar overall because:Why is water a polar covalent molecule?