The two-dimensional layer silicate ion shown in the picture below combines with magnesium and hydroxide ions to form talc.What is the formula and charge of the repeating unit of the silicate ion? 
Definitions:
Amoeba
A unicellular protist that moves by means of pseudopodia.
Locomotion
The ability or act of moving or traveling from one place to another, employing various mechanisms across different species.
Red Tides
Algal blooms that turn coastal waters red and are harmful to marine life due to the toxins produced by the algae.
Red Algae
A diverse group of eukaryotic, photosynthetic algae, often found in marine environments, known for their reddish pigments.
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