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Elements also possess isotopes. So their average Atomic Mass is rarely whole number.

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Q: Why the mass numbers on the periodic table of elements are rarely whole numbers?
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Related questions

What are the order of elements on the periodic table based on?

the elements in the modern periodic table are arrange in the increasing order of their atomic numbers.


Where are the elements with the highest chloride numbers located on the periodic table?

On the right side of the periodic table.


What is the name of the table of elements?

A Periodic table The Periodic Table of the Elements.


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What is the periodic table made up of?

The composition of the periodic table is made up of periods and groups. The table arranges the chemical elements based off of their atomic numbers, chemical properties and electron configurations.


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In general, the elements with higher atomic numbers are the most radioactive and they are found at the bottom of the Periodic Table of Elements


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What is a chart that lists all the known elements?

It is called the Periodic Table of Elements.


How do chemists organize information about elements?

By grouping the elements on the Periodic Table.


What do elements in the periodic table do?

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Table of periodic elements?

See the link below fot the IUPAC model of the periodic table of elements.