The density of solid lead (Pb) at room temperature is 11.35 g/cm3, while the density of liquid lead at its melting point of 327°C is 10.68 g/cm². Why is the density of the liquid lead slightly lower?
A The liquid lead atoms are less likely to move in a given amount of space than the solid lead atoms.
B The liquid lead atoms have a slightly larger atomic radius than the solid lead atoms.
The liquid lead atoms are less closely arranged in a given amount of space than the solid lead atoms.
D
The liquid lead atoms have slightly less kinetic energy than the solid lead atoms.