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Tanzania [10]
2 years ago
8

What is a horizontal row of elements on a periodic table

Chemistry
2 answers:
gizmo_the_mogwai [7]2 years ago
8 0

Answer:

periods.

Explanation:

Mariulka [41]2 years ago
3 0

They are called Periods. Lesser known as series

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There are 3.98 × 10^23 atoms of oxygen in the sample.

Given that;

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Therefore, there are 3.98 × 10^23 atoms of oxygen in the sample.

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