Answer:
Electrons on atoms have different amounts of energy proportional to the distance of their orbital from the nucleus. So in the flame, electrons get excited and pushed to higher energy levels by the heat energy. When they fall back down, they give off photons of light of different colors, based upon how far they fall.
I don’t get what ur asking
Answer:
a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.
Hope this helped!!!
The surface area of a solid object is a measure of the total area that the surface of the object occupies - Wikipedia
Like charges repel eachother. neutrons serve as a buffer so that the protons dont push each other apart