What kind of atom tends to lose one electron?

an atom with a single electron in its outermost shell

an atom with seven electrons in its outermost shell

an atom with a single electron in its innermost shell

an atom with a full outermost shell

Metals

Elements that readily lose electrons are all metals. Metals that normally lose one electron all form +1 ions with electron configurations we call “stable,” or “energetically favorable.” Element that are metal tend to loss electrons and became positively charged Ion called cations.

Explanation:

Your letter C

chlorophyll a: this is the most abundant pigment in plants. chlorophyll a absorbs light with wavelengths of 430nm(blue) and 662nm(red). it reflects green light strongly so it appears green to us.

answer; polycythemia is the correct answer;