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The Criss Cross Method is used to find the general formula for ionic compounds. For monatomic ions, you simply take the absolute value of the ionic charge for the positively charge ion and make it the subscript for the negatively charged ion and vice versa. Example: Al +3 and Cl -1 The 3 becomes the subscript for the chloride ion and the 1 becomes understood for aluminum, to form aluminum chloride: AlCl3 Ionic compounds that form from polyatomic ions can also make use of the criss cross method. The only additional step is to include parenthesis around the polyatomic ion if it has a subscript other than one. Example: Mg+2 and OH-1 The 2 becomes the subscript for the hydroxide ion, but a set of parenthesis is needed to indicate 2 of each the O and the H. The 1 becomes the understood subscript for Mg. Magnesium Hydroxide: Mg(OH)2
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∙ 15y ago
Wiki User
∙ 12y agoTake the two fractions and put them side to side and multiply the numerator and the numerator and the denominator by the denominator and simplify if needed
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Molecular formula of water using criss cross method?
The chemical formula of water is of course H2O.
What is the chemical formula of potassium sulphate in criss-cross method?
Potassium Sulphate (Sulphate's arrow=bold, Potassium's arrow=normal)KSO41 2K2SO4
What is the method for the disappearing cross experiment?
the disappearing cross method is a method used when observing how the concentration of a chemical affects the rate of reaction.
How are formulas written for ionic compounds with polyatomic compounds given their names?
You use the criss cross method to swith the charge of the element with the charge of the whole ion If the charge of the element is more than one then put the ion in parenthesis and then put the charge outside
What is the chemical equation of Aluminum plus Silicon?
The answer is Al4Si3. All you must do is criss cross the elements valence electrons. The original valence electron for Al is 3 and for Si it is 4.
Criss cross method?
calcium acetate
What is the answer for magnesium and carbonate using criss cross method?
3MgCO2
What is the criss cross method of potasium?
The oxidation number of potassium is +1.
What is the molecular formula of ammonium sulphate by criss cross method?
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Is ludacris criss from criss cross?
Was ludacris criss cross
Molecular formula of water using criss cross method?
The chemical formula of water is of course H2O.
What is the duration of Criss Cross Quiz?
The duration of Criss Cross Quiz is 1800.0 seconds.
When did Criss Cross Quiz end?
Criss Cross Quiz ended on 1967-09-22.
When was Criss Cross Quiz created?
Criss Cross Quiz was created on 1957-06-17.
Is thirteen twentieths bigger that eleven seventeenths?
13/20 is bigger then 11/17 because i did the criss cross method
Are criss-cross neck creases inherited?
No, criss-cross neck creases are not inherited. Neck wrinkles are caused by aging.
What is the setting in the book Criss Cross?
The setting in the book Criss Cross is Seldem, Pennsylvania.
