The following list contains some common polyatomic ions. nitrate NO3- phosphate PO4-3 sulfate SO4-2 acetate C2H3O2-1 ammonium NH4+ chromate CrO4-2 carbonate CO3-2 dichromate Cr2O7-2 permanganate MnO4-1 Using the charge on these ions and the idea of valence, predict the formula for the following: potassium chromate K 2(CrO) 4 K 2CrO 4 K(CrO 4) 2 KCrO 4
Types of Chemical Bonds
The attractive force which has the ability of holding various constituent elements like atoms, ions, molecules, etc. together in different chemical species is termed as a chemical bond. Chemical compounds are dependent on the strength of chemical bonds between its constituents. Stronger the chemical bond, more will be the stability in the chemical compounds. Hence, it can be said that bonding defines the stability of chemical compounds.
Polarizability In Organic Chemistry
Polarizability refers to the ability of an atom/molecule to distort the electron cloud of neighboring species towards itself and the process of distortion of electron cloud is known as polarization.
Coordinate Covalent Bonds
A coordinate covalent bond is also known as a dative bond, which is a type of covalent bond. It is formed between two atoms, where the two electrons required to form the bond come from the same atom resulting in a semi-polar bond. The study of coordinate covalent bond or dative bond is important to know about the special type of bonding that leads to different properties. Since covalent compounds are non-polar whereas coordinate bonds results always in polar compounds due to charge separation.
The following list contains some common polyatomic ions.
| nitrate | NO3- | phosphate | PO4-3 |
| sulfate | SO4-2 | acetate | C2H3O2-1 |
| ammonium | NH4+ | chromate | CrO4-2 |
| carbonate | CO3-2 | dichromate | Cr2O7-2 |
| permanganate | MnO4-1 |
Using the charge on these ions and the idea of valence, predict the formula for the following:
potassium chromate
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