atomic number

atomic number : Effective atomic number has two different meanings: one that is the effective nuclear charge of an atom, and one that calculates the average atomic number for a compound or mixture of materials. Both are abbreviated Z eff. The effective atomic number Z eff, (sometimes referred to as the effective..   More from Wikipedia

atomic number : A table of chemical elements ordered by atomic number and color coded according to type of element. Given is each element's name, element symbol, group and period, Chemical series, and atomic mass (or most stable isotope). af:Lys van elemente volgens getal ar:قائمة العناصر..   More from Wikipedia

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Question : does the atomic number tell you the amount of protons?

Answer : yes, it does...   More from Yahoo Answers

Question : Maybe it's from the atomic weight? Maybe someone thinked of a formula stating that the atomic number came from the atomic weight with this formula: Legend: A.W. is atomic weight while A.N. is atomic number. A.W. (cancel all decimal places) divided by: 2 = Atomic number. I tried this, my own "experimental" formula whether it works. It worked accurately with oxygen and carbon, but in other elements, (try with krypton) it won't work. The quotient wasn't the atomic number in the Periodic..

Answer : chemists now get the atomic number of an element by looking at a periodic table. they originally got it by counting the number of protons in an atom....   More from Yahoo Answers