Matthias Schleidan observed plant leaves under a microscope. How did this help contribute to cell theory It helped to show that all plants are made of cells.
It helped to show that all plants are made of chloroplast.
It helped to show that plant cells can be created from soil.
It helped to show that plants cells cannot function independently.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72

idk what is it? is this a question that you know the answer or u dont