Why are protons in an atom so important? question 1 options: protons are bigger than all the other particles in an atom. protons determine the atoms' identity (type of element) and where it is located on the periodic table. protons determine an atom's chemical properties and how it will react with other elements. there are more protons than electrons or neutrons in a neutral atom.

The each proton present at the nucleus of an atom carry one unit positive charge and it also contributes to the mass of the nucleus. For the basic law for satisfaction of nuclear physics there remain neutron at the nucleus, which is neutral in nature. The positive charge interchange between the proton and the neutron at the nucleus.

For a  neutral atom the number of electron (carries one unit negative charge) present around the nucleus must be equal to the number of protons present in the nucleus. Thus the most important point to justify the presence of proton in the nucleus among the given points is-

Protons determine the atoms' identity (type of element) and where it is located on the periodic table.            

You can see that the missing gray bars are at 2ev, 5ev, 8ev, and 15ev, these are the ranges where the photons were not detected (or absorbed by the element)

this is because in this kind of experimets you put the detector behind the element, then the photons that go through it are detected (and not absorbed) and the ones absorbed by the element never reach the detector, and are not detected.

this means that the right answer is D

The red green and blue are (almost) representing the visible spectrum of the energy of the photon, where red is between 1.6ev and 2ev, and violet is between 2.75ev end 3.26ev