Which is the most important factor in determining the state of a substance?
a) the size of the atoms in a substance
b) the number of molecules in a substance
c) the position of the electrons on the outer valence shells
d) the balance between intermolecular forces and kinetic energy

D) the balance between intermolecular forces and kinetic energy

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >