Select the word or phrase from the drop-down menu to describe ionic compounds.
A formula unit represents the simplest ratio of elements in a
of an ionic compound.
A crystal is made up of
There are two magnesium ions for every two sulfide ions in magnesium sulfide. The ratio of Mg to S in the
formula unit is

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.