A borate ion is a compound of one atom of boron and three atoms of oxygen that carries a total charge of minus three. The borate ion is an anion, which is an ion with a negative charge. An ion with a positive charge is c... More »

Many common polyatomic ions have an charge of -1, including acetate, bicarbonate, bisulfate, chlorate and chlorite. Other common polyatomic ions have a charge of -2, including carbonate, chromate, dichromate, hydrogen ph... More »

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Silicon ions can have a charge of positive four, positive two or negative four. The charge depends on the element with which the silicon has bonded. More »

Tin(IV) sulfate is a chemical compound composed of one atom of tin and two ions of sulfate, which is broken down into two atoms of sulfur and eight atoms of oxygen. It is represented by the chemical formula Sn(SO4)2. More »

The Lewis structure for the nitrate ion has a nitrogen atom in the center, with three oxygen atoms surrounding the nitrogen. There is one double nitrogen-oxygen bond and two single nitrogen-oxygen bonds. The nitrogen ato... More »

Mercury(II) sulfate is a chemical compound represented by the molecular formula HgSO4 that contains one atom of mercury, one atom of sulfur and four atoms of oxygen. It is a toxic substance that can cause health problems... More »

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Maganese (II) carbonate is a compound consisting of one carbon atom, one magnesium atom, and three oxygen atoms. It is a rhombus-shaped, crystalline solid and is naturally found in the form of rhodochrosite, a pink miner... More »

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