The periodic table is typically taken into consideration to bethe “ideal friend” of chemists and chemisattempt students alike. It has indevelopment about atomic masses and elementicons, but it have the right to also be offered to create predictions around atomic dimension,electronegativity, ionization energies, bonding, solubility, and retask.

You are watching: Each element has three numbers listed under it

 

The atomic radius which has actually a unit of pm isusually listed on the first number under the diagram.


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The atomic number is the number at the height.

The atomic number is equal to the variety of proloads in an atom"s nucleus. The atomic number determines which element an atom is. For instance, any type of atom that contains precisely 47 prolots in its nucleus is an atom of silver.


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This is a characteristic of the elements in the regular table that reflects a pattern. it may rise or decrease across or down the table.​

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