Question

Q. Write the name only

Horizontal rowsin modern periodic table
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Answer 1

Answer:

answer is period.

Explanation:

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Answer 2

Answer:

the periodic table has seven horizontal rows and 18 vertical columns the Horizontal rows have metals toward the left and nonmetals on the right the vertical column have element have similar chemical behavior rhe Horizontal rows are called period and vertical columns are called groups

Explanation:

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