Which of the statements about ionic solids is FALSE?
Question 12 options:
a) They can be formed by reacting a metal and non-metal
b) They conduct electricity when dissolved in water.
c) They tend to have high melting temperatures.
d) They are good conductors of electricity in solid form
e) They form crystals
is the correct answer d)?
Yes, the correct answer is d) They are good conductors of electricity in solid form
Yes, the correct answer is d) They are good conductors of electricity in solid form.
Ionic solids do not conduct electricity in solid form because their ions are held in fixed positions by strong electrostatic forces and are not mobile. It is only when ionic solids are dissolved in water or melted that the ions are able to move and conduct electricity.
To determine which of the statements about ionic solids is FALSE, let's analyze each option:
a) They can be formed by reacting a metal and non-metal: This statement is true. Ionic solids are typically formed by the transfer of electrons between a metal and a non-metal during a chemical reaction.
b) They conduct electricity when dissolved in water: This statement is true. Ionic solids dissociate into ions in water, allowing them to carry electric current.
c) They tend to have high melting temperatures: This statement is true. Ionic solids have strong ionic bonds, which require significant energy to break and melt. Thus, they generally have high melting temperatures.
d) They are good conductors of electricity in solid form: This statement is FALSE. Ionic solids are not good conductors of electricity in solid form. Although they have ions present, the ions are locked in a rigid lattice structure, which prevents the movement of charge carriers (ions) and therefore makes them poor conductors.
e) They form crystals: This statement is true. Ionic solids have a regular, repeating arrangement of positive and negative ions, which gives rise to the formation of crystals.
Therefore, based on the analysis, the FALSE statement is d) They are good conductors of electricity in solid form.