Question 40 (1 point) The average atomic mass, sometimes called the mass number is determined by which of the following?
a
Ob
number of protons only
number of neutrons only
number of protons and neutrons
number of neutrons and electrons
Ос
Od
HELP ASAP

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.