3
MgOH is an ionic compound because it is made up of a metal (Mg) and a hydroxide group (OH) which is a polyatomic ion. Ionic compounds typically form between a metal and a non-metal or polyatomic ion.
2 elements
A compound forms when two or more different elements chemically bond together. Therefore, at least two elements must be present for a compound to form.
how many atoms are in this compound
Mg which stands for Magnesium is the element to begin with, not a compound.
Magnesium hydroxide
There are two elements in the compound Fe2O3. These are: iron and oxygen
Two: lead and iodine.
0.0214 mol
There are only two.They are carbon and hydrogen.
There are 3 elements in the compound C6H12O6: carbon (C), hydrogen (H), and oxygen (O).
The chemical name of the compound is often based on the names of the elements that are part of it. However, for many simple organic compounds it is not possible to determine the component elements.