You are responsible for developing a new periodic table of the first 40 elements. You will need to complete this new table based on the new definition of the magnetic quantum number. This
exercise will help you understand how chemists developed the original periodic table that we
use today. In this task, you will test your understanding of the use of quantum numbers to
describe the organization of elements in the periodic table.
Procedure
1. Using enough space for 40 elements, draw the outline of your new periodic table in which
elements have a magnetic quantum number of mi= -(n + 1) to (n + 1).
2. Identify the groups and periods in your new periodic table.
3. Add the elements in your new table.

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

they are all solids.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.