The number of protons.
yes
IsotopesThe number of protons in the nucleus of an atom determines the element. The number of neutrons can vary. If two atoms of the same element have a different number of neutrons in their nuclei, they are isotopes of that element.
false
the size
The oxygen molecule is made of two atoms of oxygen bonded together (O2).
Two atoms are from the same element if they have the same number of protons in their nuclei. This is the defining characteristic that determines an element's identity. For example, all carbon atoms have 6 protons, so any two atoms with 6 protons are considered to be the same element, carbon.
They would have to be atoms of the same element, and the same isotope of that element.
Yes. If two atoms have the same number of protons then by definition they are the same element.
When two atoms of the same element come together, they form a molecule of that element. For example, when two oxygen atoms come together, they form a molecule of oxygen (O2).
The number of protons in the nucleus is the same for both isotopes since they are of the same element. Isotopes of the same element have the same number of protons (which determines the element) but a different number of neutrons, leading to a difference in atomic mass.
Yes. The number of protons defines the element.
No, the oxygen molecule is made up of two atoms of the same element, oxygen.
Diatomic
yes
Molecular hydrogen has two atoms, both which are of the same element - hydrogen.
A nonpolar covalent bond between two atoms of the same element occurs when they have the same electronegativity, leading to equal sharing of electrons. This results in a symmetrical distribution of charge, making the bond nonpolar.
No. Atoms are the building blocks of matter. Each element is composed of the same kind of atoms, according to their number of protons (atomic number). Molecules are composed of two or more atoms (they may be the same element or different elements), and compounds are composed of two or more kinds of atoms.