In the following picture of an oxide,darkly-shaded spheres represent oxygen atoms or ions and lightly-shaded spheres represent atoms or ions of a second-row element in its highest oxidation state.Tell whether the oxide is covalent or ionic and whether the oxide is acidic or basic. 
Definitions:
Osmosis
The movement of water molecules through a semipermeable membrane from a region of lower solute concentration to one of higher concentration.
Charged Molecules
Molecules that have an electric charge due to the loss or gain of one or more electrons.
Lipid Molecules
Organic molecules that are fatty acids or derivatives, insoluble in water but soluble in organic solvents, playing key roles in energy storage, structure, and signaling.
Permeability
A measure of the ability of a material to allow fluids or gases to pass through it.
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