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The number of protons. One proton and you have Hydrogen, two - Helium, three - Lithium, and so on. The atomic number is defined by how many protons are in an atom.

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15y ago

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Related Questions

What subatomic particle determines which elementan atom is?

The number of protons is determining the element


What subatomic particle determines which element it is?

The number of protons in an atom determines which element it is (i.e Silver-47 protons vs. Gold-79 protons)


Which subatomic particle identifies an atom as that of particular element?

The number of protons defines the element.


The smallest particle of an element is called?

The smallest particle of an element is called an atom.


What subatomic particle number determines the identity of an element?

The number of protons, which is the atomic number of an element, determines the identity of an element.


What particle defines an element?

The number of protons in an atom's nucleus determines the identity of element. The number of protons equals the atomic number.


What is the smallest particle in matter with unique chemical properties?

An atom is the smallest particle in matter with unique chemical properties. Each element is characterized by the number of protons in its nucleus, which determines its chemical behavior.


In the atom what type of particle determines the element that atoms represent?

proton you can change the number of neutrons and electrons and still have the same element


What subatomic particle is the MOST important when trying to figure out what the element is?

The number of protons tells you which chemical element the atom is. The number of neutrons determines the isotope of the element.


What particle has 26 electrons 29 neutrons and 26 protrons?

The particle you are describing is an atom of iron. The number of protons in an atom determines its atomic number, which is 26 for iron. The sum of protons and neutrons gives the atomic mass number, which is 56 for this iron atom.


What is called the smallest particle of an element that still retains the characteristics of that element?

This particle is the atom.


Is a particle an atom?

No, a particle is not the same as an atom. A particle is a small piece of matter, while an atom is the smallest unit of an element that retains the properties of that element.