Problem: The following diagramrepresents an ionic compound in which the red spheres (six spheres with vertical stripes in the middle row) represent cations and blue spheres (12 spheres with six in the top row and six in the bottom row) represent anions.Which of the following formulas is consistent with the drawing? KBr, K2SO4, Ca(NO3)2, Fe2(SO4)3.Name the compound from the above consistent with the drawing.

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there are only 2 types of atom present


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The following diagramThe figure shows 3 rows of spheres. There are 6 blue spheres in the top row, 6 red spheres in the middle row, and 6 blue spheres in the bottom row.represents an ionic compound in which the red spheres (six spheres with vertical stripes in the middle row) represent cations and blue spheres (12 spheres with six in the top row and six in the bottom row) represent anions.

Which of the following formulas is consistent with the drawing? KBr, K2SO4, Ca(NO3)2, Fe2(SO4)3.
Name the compound from the above consistent with the drawing.

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