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MgCr2O7
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∙ 13y ago
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Is magnesium chromate covalent or ionic?
It is ionic. The dichromate ion, Cr2O72-, with the structure [O3Cr-O-CrO3]2-, consists of covalently bonded oxygen and chromium atoms (the electronegativities of Cr and O are 1.6 and 3.5, respectively, so the bonds are highly polar). This oxyanion is bonded ionically to magnesium ions, Mg2+. See Cotton and Wilkinson, Advanced Inorganic Chemistry, for more on the dichromate ion. Magnesium dichromate is the only alkaline earth dichromate that is appreciably soluble in water.
What are the oxidation numbers of magnesium in magnesium dichromate?
In compounds, magnesium has a +2 oxidation state; in most but not quite all compounds, oxygen has a -2 oxidation state. In peroxides, oxygen has a -1 oxidation state. In oxygen fluorides, oxygen has positive oxidation states.
How do you work out the valency of the dichromate radical -Cr2O7?
The dichromate ion has the charge -2.
How chromate ions are converted into dichromate ions?
In an acidic solution chromate ions are converted into dichromate ions.
WHAT IS Ag2Cr2O9?
Silver dichromate
What are the elements that make up MgCr2O7?
Magnesium, chromium, oxygen it's called magnesium dichromate
Is magnesium chromate covalent or ionic?
It is ionic. The dichromate ion, Cr2O72-, with the structure [O3Cr-O-CrO3]2-, consists of covalently bonded oxygen and chromium atoms (the electronegativities of Cr and O are 1.6 and 3.5, respectively, so the bonds are highly polar). This oxyanion is bonded ionically to magnesium ions, Mg2+. See Cotton and Wilkinson, Advanced Inorganic Chemistry, for more on the dichromate ion. Magnesium dichromate is the only alkaline earth dichromate that is appreciably soluble in water.
Please Help me in finding the valency of dichromate in ammonium dichromate?
valency of dichromate in potassium dichromate
30g of ammonium dichromate and 20 g of magnesium sulfate combined which will be the limiting factor?
Reactants: 30 g (NH4)2Cr2O7, 20 g MgSO4 30 g (NH4)2Cr2O7 / 252.07 g/mol = 0.119 mol 20 g MgSO4 / 120.41 g/mol = 0.166 mol Since they react in a 1:1 ratio to form magnesium dichromate and ammonium sulfate, ammonium dichromate is the limiting reagent (only 0.119 mol of MgSO4 is needed to react with all the (NH4)2Cr2O7).
Name the following binary compound K2Cr2O7?
The chemical name is, potassium dichromate. It is orange in colour. Dichromate ion gives colour for this compound.
What is the name of ionic compound Cr2O3?
That would be the bichromate or sometimes called the dichromate ion. Example: Sodium bichromate (or sodium dichromate) is Na2Cr2O7.
What is K2Cr307?
potassium dichromate (PDC)
What is Na2CrO4 3H2O?
Na2Cr2O7 (the formula is not Na2CrO7) is sodium dichromate. Na2CrO4 is sodium chromate.
Name of K2Cr2O7?
The name for K2Cr2O7 is potassium dichromate.
Why are there 7 oxygen's in ammonium dichromate?
The dichromate ion is Cr2O7-2. Ammonium dichromate is two ammonium ions and one dichromate ion (to balance charges- ammonium has a +1 charge and dichromate has a -2 charge): (NH4)2Cr2O7. Therefore, ammonium dichromate would contain 7 oxygen atoms.
What is the formula for patassium dichromate?
The chemical formula of potassium dichromate is K2Cr2O7
Structure of cr2o7-2?
dichromate ion
