the atomis mass and the atomic number is all you need
there are 3 elements
The oxidation number of lead (Pb) in the compound PbCl2 has to be what?
A chemical formula shows what elements a compound contains, and the ratio of the atoms or ions of the elements in the compound.
the empirical formula
The elements are boron and oxygen. The number of atoms is 3.
Count the different chemical symbols in a compound's chemical formula to identify the number of elements. For instance, in the formula for sucrose (table sugar) C12H22O11 there are three elements -- C, H, and O. These represent carbon, hydrogen, and oxygen.
there are 3 elements
the number of the elements that is present in a compound
The number of elements in a compound can be determined by looking at the chemical formula and identifying each element's symbol. For example, the compound CO2 has two elements, carbon and oxygen. Another example, glucose, has the formula C6H12O6, and has three elements, carbon, hydrogen, and oxygen.
The oxidation number of lead (Pb) in the compound PbCl2 has to be what?
Elements are pretty much defined by the number of protons in the nucleus. This number (the atomic number) defines the element. All the different elements have different numbers of protons in their nucleus.
A compound must have at least two atoms of different elements.
magnesium bromide
I'm not sure but if we take a number of elements so you name them as compound.
Chlorine is an element. Its atomic number is 17 on the periodic table of the elements.
For example, to count the elements in a set that happens to have 33 elements.
an element is a single substance while a compound is made up of multiple elements. Theirs no way to now how many elements form to make a compound... only through a microscope/