0
What else can I help you with?
Does a positive and a positive make a negative?
No, a positive and a positive make a positive
What is electron counting?
•Oxidation State •Count the electrons- include charge! •Generally: -O always -2 (except as O2, H2O2) -H always +1 -Native elements- 0 -Alkalis +1, Alkali Earths +2, Halogens -1 -Total oxidation state should equal total charge •SiO2 • •Ca3(PO4)2 • •CH3OH • •Fe2O3
What atoms does an alkali always contain?
OH-
Are alkali metals always found pure in nature?
Alkali metals are not found as pure elements in nature.
The first elements in a period is always an?
alkali metal
How are positive and negative oxidation numbers assigned in a compound?
Positive oxidation numbers are assigned to elements that lose electrons in a compound, while negative oxidation numbers are assigned to elements that gain electrons. The oxidation number is determined by the number of electrons gained or lost in forming the compound. The sum of oxidation numbers in a compound is always zero for a neutral compound, or equal to the charge of the ion in an ionic compound.
The sum of oxidation numbers in a neutral compound is always?
The sum of oxidation numbers in a neutral compound is always zero. (Note that in order for this to be true, the oxidation number of each type of atom present must by multiplied by the number of such atoms present in the formula unit for the compound before the addition is performed.)
The sum of the oxidation number in a neutral compound is always what?
The sum of the oxidation numbers in a neutral compound is always zero. This is because the total positive charges from the oxidation numbers of the elements must balance out the total negative charges for a compound to be neutral.
Does oxidation numbers take into account stoicheometery?
The simple answer is not always. The stoicheometry deals with oxidation numbers only in redox reactions. The ratio of the change in oxidation numbers is straightly its stoicheometry.
What are all the oxidation numbers of Potassium?
Always +1
What is the oxidation number for BaF2?
The compound has no charge. This means that the positive oxidation numbers must equal the negative oxidation numbers. 'H' always has an oxidation number of +1. There are three of these atoms in the compound giving +3. To cancel out this positive number, the 'B' must equal -3.
What is the sum of the oxidation numbers in a neutral compound is always?
It should always be ZERO.
The sum of two positive numbers is?
The sum of two positive numbers is always a positive number.
The product of two numbers with different signs is always a negative?
The product of negative number and a positive number is always a negative. The product of two positive numbers, or two negative numbers, is always a positive.
Sum of oxidation numbers charge in a compound?
The sum of oxidation numbers in a neutral compound is always zero, as the charges balance out. In polyatomic ions, the sum of oxidation numbers equals the charge of the ion. When determining oxidation numbers, rules such as assigning elements in their elemental state an oxidation number of zero and hydrogen an oxidation number of +1 are typically followed.
What is the oxidation number of carbon in Na2CO3?
The oxidation number of carbon in Na2CO3 is +4. This is because the oxidation numbers of sodium and oxygen are always +1 and -2, respectively, and the sum of the oxidation numbers in a compound must equal zero.
Why must oxidation numbers be assigned to the elements before writing a chemical formula?
The oxidation numbers of the elements in a chemical formula, some of which will be positive and others of which will be negative, when multiplied by the numbers of atoms with each oxidation number, must produce products that add to a net result of zero.
