What are atoms with the same atomic number?

Answer 1

Molecules is actually an incorrect answer, as molecules are assortments of atoms that are bonded together via their electron(s) either by covalent or ionic bonds. An atomic number is a number that signifies an atoms number of protons. All elements are atoms, and there are 118 known elements, all with different atomic numbers, for they each have different amounts of protons. In essence, the atomic number DEFINES the atom, for instance Hydrogen (H+), has only one proton, while Ununotium has 118 protons. So if an atom has a different number of protons in its nucleus than another atom, then they always will be different elements. Therefore they are not "grouped" into anything other that most basically the Periodic Table.

So to answer your question directly, there is no "group" to speak of, for all atoms with the same atomic number are essentially the same type of atom.

You may have meant neutrons, as atoms that are the same but with varying numbers of neutrons can still be the same element, yet differ in neutrons in the nucleus. These are called Isotopes.

Answer 2

Atoms that have the same atomic number are known as an element. Helium, for example has an atomic number of 2, indicating that it has 2 protons. Any atom that has 2 protons is helium.

Similarly, every element has an atomic number that is the number of protons within each atom. If the number of protons is different, then it is a different element.

Note that the atomic number is not the same as the Atomic Mass. Atomic mass is approximately the mass of all protons, neutrons and electrons in one atom added together.

Answer 3

Well either they are the same atoms or they are isomers of each other if they have different numbers of neutrons

Answer 4

Atoms with the same atomic number are isotopes. Isotopes have the same number of protons in the nucleus but different numbers of neutrons, resulting in different atomic masses.

Answer 5

element

Answer 6

Isotopes.