ernestoorellanpe5gc8
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  • 09-11-2018
  • Chemistry
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A horizontal row of elements in the periodic table is known as a group or period

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ay3163
ay3163 ay3163
  • 09-11-2018

A period in the periodic table is a horizontal row. All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor.



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