The number of protons as well as the number of electrons.
Atomic number is same as the number of protons and number of electrons.
The mass number is the sum of protons and neutrons in the atomic nucleus.
Number of protons in the nucleus is the atomic number.
Protons are the subatomic particles represented by the atomic number of an element. The atomic number is equal to the number of protons in the nucleus of an atom, which determines the element's identity on the periodic table.
The proton
False; the atomic number is the total number if protons in the nucleus only.
The number of protons is equal to the atomic number of a chemical element.
Atomic Number is the amount of Protons (positively charged subatomic particles) contained in the nucleus of an atom.
No, sodium is not a subatomic particle. Sodium is a chemical element with the symbol Na and atomic number 11. Subatomic particles are particles smaller than an atom, such as protons, neutrons, and electrons.
yes. the atomic weight of an atom is determined by how many protons and neutrons it has. determine the number of neutrons by subtracting the atomic number from the atomic mass
Atomic Mass units =]
In this case, the number 209 represents the sum of protons + neutrons.