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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 blue dots represent electrons in the electron cloud. The blue dots represent electrons in the electron cloud. There are 8 protons located in the nucleus. There are 8 protons located in the nucleus. 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. There are 8 electrons located in the nucleus. There are 8 electrons located in the nucleus. The valence of oxygen is 6. The valence of oxygen is 6. The valence is determined by the red yellow dots. The valence is determined by the red yellow dots. Skip to navigation it is a four point question

1 answer

Based on your description of the atom of oxygen (O), here are the correct statements among the options provided:

  1. The blue dots represent electrons in the electron cloud. - True. Electrons are indeed represented in the electron cloud, often depicted as dots around the nucleus.

  2. There are 8 protons located in the nucleus. - True. Oxygen has an atomic number of 8, meaning it has 8 protons in its nucleus.

  3. The total mass of this atom is a combination of red and yellow dots. - This statement may or may not be true, depending on what the red and yellow dots represent. If we assume the red dots are protons and yellow dots are neutrons, then this statement is true because the mass of an atom is the sum of protons and neutrons.

  4. There are 8 electrons located in the nucleus. - False. Electrons are not located in the nucleus; they orbit the nucleus in the electron cloud.

  5. The valence of oxygen is 6. - False. The valence of oxygen is typically 2 because it needs 2 more electrons to complete its outer shell, which can hold up to 8 electrons.

  6. The valence is determined by the red yellow dots. - False. The valence of an element is determined by the electrons in its outermost shell, and if red and yellow dots represent protons and neutrons, they would not determine the valence.

Given this analysis, the correct responses would be:

  • The blue dots represent electrons in the electron cloud.
  • There are 8 protons located in the nucleus.
  • The total mass of this atom is a combination of red and yellow dots (assuming red = protons and yellow = neutrons).