can anybody please explain nomenclature to me ? how to name?
for example: Na3PO3
NH4CLO2
AuNO2
It's far to taxing to write all of the rules of nomenclature on this board; however, I can give you some starting points and give you a link or two to read.
First, for salts, name the cation first and the anion second.
http://www.woodrow.org/teachers/chemistry/links/chem1/PolyatomicIonsChart.htmls
naming acid
For example:
Na3PO3. Na is sodium, name that first. PO3 is the phosphite ion so the salt is sodium phosphite.
AuNO2. Au is gold. Since gold has common oxidation states of +1 and +3, it can be named gold(I)nitrite. Etc.
Don't get discouraged. It takes a lot of practice. I recommend you memorize the anion tables and some of the common acids. There are rules for naming them but memory gets you started in hurry.
i ran into a problem that is
tin(IV)dichromate
i thought the answer was SN2(Cr2O7)4
but the book says the answer is SN(Cr2O7)2
CAN YOU PLEASE EXPLAIN WHY??
First, its Sn and not SN.
Next, tin(IV) means tin with a valence of 4. Dichromate is Cr2O7^2- (I don't know if the dichromate ion is given in the chart I gave you or not).
Sn2(Cr2O7)4 is exactly the answer you would get; however, we USUALLY (not always) reduce the fractions if possible. Since both 2 and 4 are divisible by 2, we have Sn(Cr2O7)2.
(The only time we don't reduce it is when we KNOW the formula is not the simplest empirical formula. For example H2O2 is hydrogen peroxide and not HO. S8 is sulfur and not S. Hg2Cl2 is mercury(I) chloride and not HgCl.)
okay , the website you put does not work. But one last question. for sodium hydrogen arsenate it says to give the correct formula. how do i go about doing that? how do i start?
i know that sodium is Na and that arsenate is AsO4^3-
na(H2As04)3
What is the correct name of H2TeO2
Certainly! Nomenclature is the system used to name chemical compounds. It helps chemists communicate and identify different substances. To name a compound, you'll need to follow certain rules based on the elements present in the compound.
Let's take a look at the examples you provided:
1. Na3PO3:
- In this compound, "Na" represents sodium, and "PO3" represents the phosphate ion (PO43-).
- To name this compound, we start by naming the first element, sodium. Sodium is a group 1 element, so it is named unchanged.
- Next, we name the second element, which is the phosphate ion. Since the phosphate ion has a 3- charge, we use the "-ate" suffix. So, "PO3" becomes "phosphate."
- Putting it together, the name of this compound is sodium phosphate.
2. NH4CLO2:
- In this compound, "NH4" represents the ammonium ion (NH4+), and "CLO2" represents the chlorite ion (CLO2-).
- To name this compound, we start by naming the first element, ammonium. Ammonium is a polyatomic ion, so we keep the name the same.
- Next, we name the second element, which is the chlorite ion. Since the chlorite ion has a 1- charge, we use the "-ite" suffix. So, "CLO2" becomes "chlorite."
- Putting it together, the name of this compound is ammonium chlorite.
3. AuNO2:
- In this compound, "Au" represents gold, and "NO2" represents the nitrite ion (NO2-).
- To name this compound, we start by naming the first element, gold. Gold is a transition metal, so we need to specify its oxidation state using Roman numerals.
- The oxidation state of gold in this compound is +1, so we use the Roman numeral "I" in parentheses after the element name. So, "Au" becomes "gold(I)."
- Next, we name the second element, which is the nitrite ion. Since the nitrite ion has a 1- charge, we use the "-ite" suffix. So, "NO2" becomes "nitrite."
- Putting it together, the name of this compound is gold(I) nitrite.
Remember, it's important to understand the charges on ions and the prefixes/suffixes used in nomenclature to correctly name compounds.