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What are the 4 categories included in the Periodic Table?

There are many ways to categorize elements. I am uncertain how you got just four.

The Originator of the four concepts did it this way...

Maybe your teacher is looking for these four: Nonmetals, metals, noble gases, and rare earths. Or nonmetals, metals, noble gases, and metalloids.

Do you know the group numbers of the periodic table or know a site that does?

Go to amd click on the pro version.

  • HELP! -

    Do you guys have a poem for group 17 of the periodic table

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