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The Proton number defines the element, so there cannot be two atoms of the same element with different proton numbers, because they will be, by definition, different elements.

Neutron numbers can differ though. When one element has different neutron configurations, these are called Isotopes.

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Q: What are atoms of the same element but have different sums of protons and neutrons?
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Are atoms of the same element that have the same number of protons but have different number of neutrons?

Isotopes are atoms of the same element, having the same number of protons but different number of neutrons.


What is the name given to atoms of the same element that have the same number of protons?

Atoms of the same element cannot have different numbers of protons. Different numbers of protons mean different elements. An atom with the a different number of neutrons is called an isotope.


Which atoms that are same element and have the same number of protons but have different number of neutrons?

Isotopes are atoms of the same element, having the same number of protons but different number of neutrons.


In what way are atoms of one element different from atoms of other elements?

The number of electrons and neutrons may differ for atoms of the same element. However, what distinguishes atoms of one element from those of a different element is the number of protons in the atom's nucleus. All of the atoms of an element have the same number of protons, which is the single most important determiner of the properties of an element.


What are atoms of an element that make different atomic masses?

protons and neutrons


What are atoms that have the same element but different neutrons?

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.


Do all atoms of the same element contain the same number of netrons?

No, atoms of the same element have the same number of protons. Atoms of the same element with different numbers of neutrons are called isotopes.


Do the nuclei of all atoms of a given element always have the same number of neutrons?

No - different isotopes of an element have different numbers of neutrons. All atoms of an element will have the same number of protons.


Atom of an element with a different number of protons?

This is not possible. The number of protons identifies an element, and all of the atoms of the same element have the same number of protons. The atoms of an element can, however, have different numbers of neutrons, and they are called isotopes.


Is it possible for atoms of the same element to have different chemical properties?

Atoms of the same element differ in the number of neutrons in their nuclei. All atoms of a given element have the same number of protons, of course. The number of protons in a nucleus determines which element the atom is. But the number of neutrons can vary, and these different "versions" of a given element are called isotopes of that element. See the related question, which is linked below.


Neutral atoms of the same element can differ in their number of what?

Neutrons. If the differ in electrons they are not neutral and if they differ in protons then they are no longer the same element as the number of protons determines the name of the element.


Atoms of different elements are different because they have different numbers of what type of particle?

Atoms are considered to be of the same element if they have the same number of protons. If their atoms have a different number of NEUTRONS, they are known as ISOTOPES of the same element.