Nomenclature of Simple Binary Compounds-Names to Formulas
Click 'New Problem' and enter the Formula for the following compound:
This is a basic exercise in converting names into formulas
for binary compounds. Since its effective use requires analysis of text
input there are some basic rules:
Spelling matters very much. No effort has been made to analyze input against
possible spelling errors.
The proper atomic symbol and capitalizations must be used.
All compounds on this page can be viewed as simple binary compounds.
1. The user should refer to the periodic table for the proper atomic symbols
2. Pressing "New Compound" will give you the name of a compound.
3. Enter the formula of the compound in the cell using the following
4. Press "Check Answer."
The formula must be a single word. NaCl is correct Na Cl is not.
Parentheses must be used appropriately.
The numeric characters must be properly entered when needed. The input
will not show these as subscripts. Calcium iodide will be CaI2, for example.
Calcium nitrate will be Ca(NO3)2.
Do not put spaces at the end of the formula.
5. Results and score appear in the lower table on the page.
This page was developed by David Arrow, based largely on
code written by Prof George
Wiger of California
State University, Dominguez Hills campus.
If you miss a problem three times, pressing "Show Answer" will cause the
correct answer to appear.
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This page has been accesses
since Nov 11, 1999