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The atomic number defines an atom's identity, i.e. element. A group of atoms contatining the same number of protons in their nuclei belong to the same element even if they can have different numbers of neutrons or electrons associated with them. If two atoms have the same number of protons but different number of neutrons, they are called isotopes. If an atom has less or more electrons than its number of protons, it is known as an ion. In certain instances during radioactive decay, the number of protons in an atom's nucleus can actually change. This results in a transmutation (change of one element to another).

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15y ago
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9y ago

The atomic number serves as the unique identification of a chemical element. It is the number of protons found in the nucleus of an atom which is also equal to the charge of the nucleus.

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12y ago

I think is Protons

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Q: What part of the atom reveals the chemical identity of a element?
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Related questions

Does an atom retain the chemical identity of an element?

An isotope is an atom that contains a different number of neutrons. In order for an element to change there has to be a different number of protons.


What do you mean by an atom of a molecule?

the smallest particle of an element that maintains its chemical identity through all chemical and physical changes is called an atom


Which component of the atom can change its identity to a new element?

Protons determine which element an atom is.


The smallest particle of an element that retains its identity in a chemical reaction?

An atom is the smallest particle of an element that can be uniquely identified as that specific element.Note that this question is different from asking "What is the smallest particle in an atom?" (see related question below). Atoms are composed of smaller particles (protons, electrons, and neutrons), but the smallest thing that has the identity of a specific element is the atom.The smallest particle of an element that still retains all that element's properties is called an ATOM.


What is the particle that identifies a atom?

The number of protons in an atom's nucleus determines its chemical identity.


What is the smallest part of an element that retains the element's properties?

The smallest subdivision that retains all of the properties of a molecular compound is a molecule, and the smallest subdivision that retains all of the properties of a ionic compound is a formula unit.


What is identitfied as an atom?

An atom is the smallest part of matter with a chemical identity, impossible to be broken by chemical procedures.


Where does a element takes its identity from?

The number of protons in the nucleus of an atom will determine its chemical identity. Only that. The number of neutrons can vary a bit, depending on the element, and we call these variations isotopes of that element. Electron count will match proton count only in a neutral atom. Rememeber that atoms loan out and borrow electrons, which is what chemistry is all about.


An atom is the smallest part of?

retains the chemical identity of that element.


What is atom and who discovered atom?

an atom is the basic unit of a chemical element.


What part of the nucleaus can change and not change the identity of the element?

The number of protons in the nucleus affects the elemental identity of an atom, whereas the number of neutrons does not affect which element an atom belongs to.


What is the smallest piece of a chemical element called?

An ATOM!!!! An atom can be sub-divided in to protons, neutrons, and electrons.