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Chemistry, 26.10.2019 00:43 0055babs

13 atoms of elements in a group of the periodic
table have similar chemical properties.
this similarity is most closely related to the
atoms'
(1) number of principal energy levels
(2) number of valence electrons
(3) atomic numbers
(4) atomic masses

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13 atoms of elements in a group of the periodic
table have similar chemical properties.
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