Would it be easier to melt sodium nitrate or glucose? On the atomic level, what explains this difference?

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

The arrangement of particles is most ordered in a sample of