Name the chemical formula for each:
a. Sodium hydrogen carbonate
NaHCO3
b. Calcium Hypochlorite
Ca(ClO)2
c. Hydrogen cyanide
HCN
d. Magnesium hydroxide
MgOH2
3. Tin(II) fluoride
SnF2
Are all of these right?
yes
You erred on writing the formula for magnesium hydroxide, Mg(OH)2.
Yes, all of the chemical formulas you provided are correct. Well done! It seems you have a good understanding of chemical nomenclature. If you ever come across a chemical name that you are not familiar with, there are a few steps you can follow to determine its chemical formula:
1. Identify the elements present: Look for the names of elements in the name of the compound. In some cases, the name of the element will be directly mentioned (e.g., sodium, calcium, hydrogen, etc.).
2. Determine the valency of each element: Valency refers to the combining capacity of an element with other elements. It helps in determining the number of atoms of each element in the compound. The valency of elements can be found by referring to the periodic table or looking up valency tables.
3. Balance the charges: In ionic compounds, elements combine in a way that balances charges. Positive ions (cations) and negative ions (anions) must combine in such a way that the total positive and negative charges cancel each other out.
4. Write the chemical formula: Based on the charges of the ions, write the chemical formula by using subscripts to indicate the number of atoms of each element.
Following these steps will help you determine the correct chemical formula for various compounds.