The sum of the protons and neutrons in an atom is called the atomic number
true or false

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.

Compare sympathetic and parasympathetic