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The concept of atomic number had not yet been developed at the time of the first periodic tables, when atoms were still considered "indivisible units" and the concepts of protons, electrons, and neutrons were not yet known.

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The subatomic particles or units that govern potential chemical reactions among elements are?

Electrons are the subatomic particles that govern potential chemical reactions among elements. They are responsible for forming chemical bonds between atoms by either sharing, gaining, or losing electrons.


Are elements particles?

yes


What are the subatomic articles that can change in a nuclear reaction?

The subatomic particles that can change in a nuclear reaction are protons, neutrons, and electrons. During nuclear reactions, these particles can be gained or lost, leading to the formation of different elements and isotopes.


What subatomic particles makes an element reactive?

Electrons are the subatomic particles that make an element reactive. Elements react with one another by gaining, losing, or sharing electrons to attain a more stable electron configuration.


Why were the elements important to Mendeleev?

Chemical elements arrangement was the object of study for Mendeleev.


What are the subatomic particles of manganese?

Subatomic particles are the same for all substances that exist everwhere. So to ask "What are the subatomic particles of manganese?" is really not a good question. Manganese is an element. And like all elements, it is made up of atoms. Atoms are made up of.......subatomic particles! (Moledule)(Cation)(Ion)===>Element====>Atom====>Subatomic particle The are three basic subatomic particles: protons, electrons and neutrons. If you really want to get anal about it, you can also find out what neutrons are made up of. I would tell you, but I forgot!


Shared when elements combine to form a compound?

Electrons are shared when elements combine to form molecules. These are subatomic particles with a negative elementary electric charge.


Is oxygen one atom?

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What are the subatomic particles of astatine?

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How can be defined the elements?

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What do elements fit into?

what did Mendeleev see that elements it into


What statements regarding the periodic table of elements is true?

An element is a substance which cannot be broken down into other elements, but only into subatomic particles, and which is defined by the number of protons in its nucleus.