The identity of an atom is defined by its Atomic Number, the number of Protons in the Nucleus. If the atom is un-ionized, it will also have the same number of electrons. So, just to be excruciatingly specific, every atom of the same element has exactly the same number of protons.
They have a nucleus which contains protons and neutrons*, and an electron cloud surrounding the nucleus which contains the electrons. *The most abundant isotope of hydrogen does not have any neutrons in the nucleus of its atoms.
All atoms of the same element have the same number of protons.
All atoms of an element have the same number of protons and electrons (in the neutral state).
The number of protons.
All atoms of any single element have the same number of protons and electrons.
Number of protons in the nuclei of their atoms.
Argon is an element and all the atoms in argon are argon atoms.
All atoms of the same element are not identical. The atoms of same element with different number of neutrons are called as isotopes. Although, the number of protons and electrons are same in every atom.
The atoms of an element are all identical.
All atoms of any single element have the same number of protons and electrons.
Number of protons in the nuclei of their atoms.
The commonalities that elements, compounds, and mixtures all have in common is that they all contain atoms. Even though they all contain atoms, the number of atoms vary in each of them.
hydrogen
All the atoms have the same number of protons (element type).
The number of protons is identical in all atoms of an element.
Argon is an element and all the atoms in argon are argon atoms.
Because they are all the same type of atoms. Oxygen is an element. If you have 10 oxygen atoms, they will all behave like oxygen, since they are the same element.
All atoms of the same element are not identical. The atoms of same element with different number of neutrons are called as isotopes. Although, the number of protons and electrons are same in every atom.
an element is made out of atoms which are the same makeing elements pure apposed to an alloy which is a mix of metals with mixed atoms
The most common element in the universe is hydrogen.
The atoms of an element are all identical.