Question

You're selecting pictures for a class presentation on your new favorite element, oxygen, O. You're told this is a correct model of an atom of this element. Select all that are true.



(4 points)
Responses

The total mass of this atom is a combination of red and yellow dots.
The total mass of this atom is a combination of red and yellow dots.

The blue dots represent electrons in the electron cloud.
The blue dots represent electrons in the electron cloud.

The valence is determined by the red yellow dots.
The valence is determined by the red yellow dots.

The valence of oxygen is 6.
The valence of oxygen is 6.

There are 8 electrons located in the nucleus.
There are 8 electrons located in the nucleus.

There are 8 protons located in the nucleus.
There are 8 protons located in the nucleus.
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Answer 1

True (select these):
- The total mass of this atom is a combination of red and yellow dots. — mass comes from protons and neutrons in the nucleus.
- The blue dots represent electrons in the electron cloud. — electrons occupy the cloud, not the nucleus.
- The valence of oxygen is 6. — oxygen has six valence electrons (electron configuration 2,6).
- There are 8 protons located in the nucleus. — oxygen's atomic number is 8.

False (do not select):
- The valence is determined by the red yellow dots. — valence is determined by electrons (blue), not protons/neutrons.
- There are 8 electrons located in the nucleus. — electrons are in the electron cloud, not the nucleus.