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3 years ago

13

Why are the elements placed into groups/families?

1 answer:

VashaNatasha [74]3 years ago

5 0

Answer:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

Step-by-step explanation:

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