What happens when an atoms losses an electron- it becomes more positive
it becomes more negative
it gains protons
it forms a covalent bond

According to the trichromatic theory of color vision, also known as the Young-Helmholtz theory of color vision, there are three receptors in the retina that are responsible for the perception of color. One receptor is sensitive to the color green, another to the color blue and a third to the color red.

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