If you mean protons and electrons then protons are positive and electrons are negative, so the protons and electrons cancel each other out leaving the atom stable. If the numbers were uneven, the atom would be unstable and decay, but that doesn't mean that all unstable atoms have an uneven number of protons and electrons.
The number of protons is identical in all atoms of an element.
All atoms of the same element have the same number of protons, which is its atomic number. A neutral atom will have the same number of electrons as protons.
Atoms of the same element must contain the same number of protons. This is because of the positive charge they provide.
NO. The number of electrons in any neutral atom must be the same as the number of protons. The number of protons is the atomic number, if the atomic number is the same then the atoms are of the same element, not different ones.
They are called Isotopes
Each chemical element has a specific number of protons; the number of protons is equal to atomic number of the element.
The atomic number of an atom is the atoms number of protons. The number of protons is same as the number of electrons. on a Periodic Table it is usually on top of the elemental abbreviation
The atomic number of an element is how many protons and electrons (you must have the same amount of protons as electrons) an element has in it's nucleus. The Atomic number= number of protons= number of electrons.
HydrogenAll atoms, ions, and isotopes of the same element have the same number of protons. The number of protons defines the element. Hydrogen atoms all have one proton. So it does not matter if you provide the mass number (hydrogen-1) because the number of protons does not depend on it. It does, however, let us know the number of neutrons. The mass number is the sum of the number of protons and neutrons. Because we know that hydrogen has one proton, and the mass number is one, there must be no neutrons.
What is element 15? If it's the element on the periodic table with the atomic number 15, it would be Phosphorus which does have electrons, 15 of them. All elements on the periodic table have electrons.
Without the same number of protons it would be a completely different element on the periodic table and would be considerd an isomer. Take Chlorine-35 and Chlorine-37 for example... they are also isomers because they have a different number of protons. Therefore are different elements.
Only hydrogen and helium have the stated property. For all heavier elements than these two, the number of valence electrons is less than the total number of electrons, which must be the same as the number of protons in all neutral atoms.