atomic mass of first 30 elements

Atomic mass - ... mass or standard atomic weight by several mass units. Standard atomic weight refers to the mean relative atomic mass of an ... containing one or more of the chemical element in question...

Mass number - The mass number (A), also called atomic mass ... the difference between the mass number and the atomic ... atomic weight) of an element, which is the average atomic mass number of .....

Mononuclidic element - A mononuclidic element is a chemical element which is found essentially as a single nuclide, of only one atomic mass. Thus, the element's natural isotopic abundance is dominated either by one stable isotope or by one very long-lived isotope. There are nineteen elements in the first category,..

Mononuclidic element - A mononuclidic element is a chemical element which is found essentially as a single nuclide, of only one atomic mass. Thus, the element's natural isotopic abundance is dominated either by one stable isotope or by one very long-lived isotope. There are nineteen elements in the first category,..

  Atomic Mass 1-10   The first 10 elements of the periodic table of the elements

  Quran The mystery in Iron Discovery channel   for every human being, and no two human beings have the same fingerprint, the Atomic Number of an element is also unique for that element. Chemically, iron is a metal, and is the 26th element in the Periodic Table, (atomic number =26), but it has the Atomic Mass Number of 56. The Periodic Table is an arrangement of known elements according to their Atomic Mass. It was first compiled in 1869, by a Russian chemist called Dmitri Mendeleev. The elements are identified and placed according to ...

Question : Is there a website that has the number of protons, electrons, and neutrons in one atom of all the elelements?? Because I have been to a million sites and cannot find this information!! THANK YOU.

Answer : In the Periodic Table of Elements, all 118 known Elements are listed under the Element's Symbol and Name. With each Symbol, there are two main numbers. The largest Main number is the 'Atomic Mass' of the Element. The other Main (smaller) number is the Atomic Number. The Atomic number represents the Number of Protons in the Element's Nucleus. (This is also the number of Electrons in orbit around the Nucleus). The Atomic Mass minus the Atomic number gives the number of Neutrons also in the Nucleus. Example:...Find the Element 'Iron' (Fe) (element No. 26). The 26 tells you that Iron (Fe) has 26 Protons and therefore 26 Electrons as a neutral atom. You will also see the Number '56' (Atomic Mass) with the symbol. Take 26 from 56 = 30 Neutrons in Iron.

Question : i had to create my own element and give it isotopes. it's atomic number is 79. i think the mass is 197. so i made my isotopes: 196, which is : 70% 198 , which is : 30% how do i find the average atomic mass using the isotopes?

Answer : you take the masses and multiply by their respective percentages. 196 x .70 = 137.2 198 x .30 = 59.4 Add together and that = 196.6

Question : The question is:An imaginary element Y occurs 30% of the time with a mass of 57.9 a.m.u. The remaining sample of Y has a mass of 60.9 a.m.u. What is the average atomic mass of Y? I have no idea how to do this...Can you explain how you got your answer please?

Answer : 30 x 57.0 + 70x60.9/100=60 This is average atomic mass of all isotopes of element.