The model below shows an atom of an element
• 6
• 8
• 9
• 16

8

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

We are given that the darkest colored ball is a proton. We also know that all protons are found in the nucleus of the atom along with neutrons. Knowing that only protons affect the Atomic Number and Element it is, we count the number of darkest colored balls.

According to the given atomic model, we have 8 protons in the nucleus. Therefore, this atom has an Atomic Number of 8 and is an Oxygen.

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