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ivann1987 [24]
4 years ago
7

1. The horizontal columns on the periodic table are called

Chemistry
2 answers:
Anna11 [10]4 years ago
8 0

Answer:

Periods

Explanation:

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.

ki77a [65]4 years ago
5 0

Answer: rows

Explanation:

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