0
Why are the oxidation numbers of alkali metals always positive?
Morgan5683
Becaus ethey have the weakest electronegativity causing them to share or lose their electrons.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
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
Why the Oxidation state of oxygen is -2 in carbon monoxide?
It's simply a convention that Oxidation state of Oxygen is always -2 and Oxidation state of Hydrogen is always +1
What is the oxidation stateof F in HOF?
oxidation state of Fluorine is always -1.
What atoms does an alkali always contain?
OH-
How do you determine the atomic number of an atom?
Follow these 5 Rules1) The oxidation number of the atoms in a neutral molecule must add up to zero, and those in a charged ion must add up to the charge on the ion. 2) Alkali metal atoms (first column in the periodic table) have oxidation number +1, alkaline earth atoms (2nd column) have oxidation number +2.3) Fluorine always has oxidation number -1. Other halogens (next-to-last column in the periodic table) usually have oxidation number -1, except when they are bonded to oxygen or other halogens, when they can have positive oxidation numbers.4) Hydrogen has oxidation number +1 except in metal hydrides, such as LiH or CaH2, where Rule #2 takes precedence, and hydrogen has oxidation number -1.5) Oxygen has oxidation number -2, with two exceptions: In compounds where it is bonded to fluorine, Rule #3 takes precedence, and in compounds with O-O bonds, Rules #2 and #4 take precedence. So, for example, the oxidation number in OF2 is +2, and the oxidation number in peroxides such as H2O2 is -1 (and superoxides, the oxidation number is -1/2)It is also convenient to know the charge on these common ions:Nitrate is minus one: NO3-Hydroxide is minus one: OH-Sulfate is minus two: SO42-Carbonate is minus two: CO32-Phosphate is minus three: PO43-Ammonium is plus one: NH4+
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.
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.
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 sum of the oxidation numbers in a neutral compound is always?
It should always be ZERO.
What determines the oxidation number?
The oxidation number determines how much an element is oxidated, so the oxidation number of...1. elements is always 0.2. of simple ions is always the charge, e.g. in Cu2+ the oxidation number of copper is +2.3. hydrogen is usually +1, oxygen usually -2, alkali metals +1, etc.In molecules without a charge, the sum of the oxidation numbers has to be 0. This way you can calculate the oxidation number of its compounds. For example in KMnO4, the oxidation number of oxygen is -2, of K is +1, so if the sum is zero then the oxidation number of Mn has to be +7.In complex ions (OH-, MnO4-, ...) the sum of the oxidation numbers has to be the charge of the ion. (so in OH- and MnO4- it's -1).
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.
Does the difference between a positive decimal and a negative decimals can always sometimes or never be positive and why?
It is always positive, and not just for decimal numbers but for all numbers.
What is the oxidation number of FeSO4?
0 because all compounds have an oxidation number of 0. It's the ions (fe S O) that have oxidation numbers, The sum of these oxidation numbers always = 0 in a compound and hence a compound has a oxidation number of 0. :-) hope this helped....
What combination of signed numbers always leads to a positive number?
If I understand the question correctly, the sum of two positive numbers will *always* yield a positive number. The product of two positive or two negative numbers will always yield a positive number. The division of two positive or two negative numbers will always yield a positive number. There are more examples along this line. I am not sure if this is what you wanted to know.
The sum of any two positive numbers is?
always positive
