The number of protons in an atom is equivalent to which of the following

a. atomic mass

b. atomic charge

c. atomic symbol

d. atomic number

it takes on an electronical energy

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

the correct answer would be b) volume versus temperature, because they are also directly proportional.