Both NaCl and CaO crystallize in the same lattice structure. Account for the following: The melting point of CaO is 2899°C while that of NaCl is 800°C. Mark all of the following that contribute to this difference in melting points.
Calcium ion has a larger charge than sodium ion.
The ionic radius of chloride ion is larger than an oxide ion.
NaCl has a higher molar mass than does CaO.
Oxide ion has a larger charge than chloride ion.
Calcium ions and sodium ions have similar ionic radii.
2006-10-30 07:43:52 · 3 answers · asked by ryan c 1 in Science & Mathematics ➔ Chemistry
Calcium has a larger charge than Sodium (+2 versus +1)
Oxide has a larger charge than chloride (-2 versus -1)
2006-10-30 08:08:14 · answer #1 · answered by Dave_Stark 7 · 0⤊ 0⤋
The ionic radius of chloride ion is larger than an oxide ion.
2006-10-30 08:10:34 · answer #2 · answered by prodigy 1 · 0⤊ 0⤋
As I know that melting point of the substance is at which temperature, substance become completely from solid to liquid. So we can say that end point of melting range. This will vary by substances to substance based on its purity.
2016-05-22 12:11:58 · answer #3 · answered by Anonymous · 0⤊ 0⤋