It tells you how many protons are in the element. For example if the atomic number is 5 then the protons of the element is 5.
Atomic Mass is the no. of protons+no. of nuetron
The Atomic Mass of an element tells you the average mass of an atom in the element.
atomic mass is the no. of protons+no. of nuetron
The gram atomic weight or gram Atomic Mass of a chemical element is the mass in grams of Avogadro's number of atoms of the element with the isotopic proportions found in nature.
The element symbol represents one mole of element , atomic number represents number of protons, atomic mass represents sum of protons and neutrons.
that there are stable isotopes of that element
an element of period 6 name has hafnium having atomic no 72 and atomic mass as 178.49
when atomic mass of an element expressed in gram atom is called gram atom mass . and formula is number of gram atom=given mass (in gram) by atomic mass ( in gram )
Atomic mass is the number of protons + the number of neutrons in the nucleus of an atom. On the periodic table, the average atomic mass of an element will the be number at the bottom of each box.
NameAbbreviationAtomic Number (number of protons = number of electrons)Number of neutrons in various isotopesAtomic massValenceGroup
The atomic mass of an element represents the average mass of its isotopes, taking into account their abundance. It is the sum of the protons and neutrons in the nucleus of an atom. By subtracting the atomic number (number of protons) from the atomic mass, you can determine the number of neutrons in the nucleus.
You can tell isotopes apart by the difference in there atomic mass numbers. Take for example the isotope Carbon-12. Carbon is the element name and 12 is the Atomic Mass of the element. The atomic mass number can (most?) always be changed, but the the atomic number ( the number above the Element symbol on the Periodic Table) cannot. Remember: The number of protons add by the number of neutrons equals the atomic mass number. The proton number = the atomic number, as of the number of electrons= the atomic number; hence the atomic number= number of proton = number of electron.