Question

How are elements arranged on the periodic table?

Answer 1

The symbols for all of the elements are arranged on the periodic table of the elements according to their atomic numbers. The named elements have symbols with either one or two letters. Two things to remember are that, if the symbol has only one letter, it is always capitalized; but if the symbol has two letters, the first one is always capitalized and the second one is never capitalized. The only exceptions are the symbols for the elements that have not yet been named. They have three letters, and only the first letter is capitalized.

Examples:
Calcium => Ca
Oxygen => O
Ununtrium => Uut (element 113, as of yet unnamed, literally means one one three)

I am including a link for this printable periodic table.
http://www.nist.gov/pml/data/periodic.cfm