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Greeley [361]
3 years ago
8

The elements on the Periodic Table that we use today are arranged by

Social Studies
1 answer:
ratelena [41]3 years ago
8 0

Answer:

They are arranged by in order by the increasing atomic number.

Explanation:

The horizontal rows are called periods and the vertical columns are called groups.Elements in the same group have similar chemical properties.This is because they have the same number of our electron and the same valency.

Hope this helps!

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<em>Hope it helps and pls mark me brainliest</em>

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