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The modern Periodic Table does a lot of things. It organizes elements in order of electron orbitals for one thing (1s, 2s, 2p, 3s, 3p, 4s, ect..). It also has all noble gases stacked on top of each other helping to determine the columns of 1-8 valence electrons. It seperates all metals from nonmetals and elements in the same column will have similar physical and chemical properties.

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βˆ™ 13y ago
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βˆ™ 13y ago

The order is based on the number of protons an atom of that element has in its nucleus.

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βˆ™ 12y ago

The periodic table of the elements is organized by the simularities between each of the elements.

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βˆ™ 13y ago

The order of the elements in the periodic table are based on increasing atomic number. The atomic number is the number of protons in the nucleus of an atom in any given element.

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βˆ™ 8y ago

Atomic number (number of protons)

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pattern of valence electrons.

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βˆ™ 10y ago

by their atomic number

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βˆ™ 12y ago

Number of protons in the nucleus.

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Q: What is the basis for the organization of the modern periodic table is?
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