Wiki User
∙ 9y agoThis particle is the proton.
Wiki User
∙ 9y agoThe two subatomic particles are protons and electrons. They match the atomic number on periodic table.
NUmber of protons = Number of electrons = Atomic number Number of neutrons = Mass number - Atomic number
In this case, the number 209 represents the sum of protons + neutrons.
They are called "subatomic particles." Another answerer suggested "nucleons," but this applies only to nuclear particles (protons and electrons). They are also Fermions, but there are fermions other than these three. I would stick with "subatomic particles."
The "subatomic" particles in atoms are usually considered to be only protons, neutrons, and electrons, although these may contain sub-subatomic particles such as quarks and gluons. Every atom of xenon contains 54 protons and 54 electrons, because 54 is the atomic number of xenon. Every atom of xenon also contains neutrons. The lightest naturally occurring and radioactively stable isotope of xenon is Xe-124. Since the mass number is the sum of protons and neutrons, the total of protons, electrons, and neutrons for this isotope is 124 + 54 or 178. The number of particles for any other isotope of xenon may be found by adding the mass number to the atomic number.
Number of protons in the nucleus is the atomic number.
The two subatomic particles are protons and electrons. They match the atomic number on periodic table.
Atomic number is same as the number of protons and number of electrons.
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.
This particle is the proton which is equal to the atomic number.
Atomic Number is the amount of Protons (positively charged subatomic particles) contained in the nucleus of an atom.
The number of protons as well as the number of electrons.
NUmber of protons = Number of electrons = Atomic number Number of neutrons = Mass number - Atomic number
The mass number is the sum of protons and neutrons in the atomic nucleus.
protons is the same number as the atomic number always and protons plus the average number of neutrons makes up the atomic mass