Protons plus neutrons
Lithium is a meta element. Atomic mass of it is 7.
the atomic mass is on some periodic tables and is the decimal. for example... for carbon the atomic mass is 12.01 on my periodic table that i am looking at go to this website. http:/www.ptable.com. it should have a periodic table and the atomic mass is on the very bottom of each box. for example the atomic mass for bromine is 79.904
The mass number is the total number of protons and neutrons in an atom's nucleus, while the average atomic mass is the weighted average of the masses of all isotopes of an element based on their abundance in nature. The mass number is a whole number, while the atomic mass is a decimal value.
the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus. (atomic number) The mass of a given atom or molecule, expressed in atomic mass units. (atomic mass)
The molecular mass of allegra (fexofenadine hydrochloride) is calculated by adding the atomic masses of each atom in the compound. By summing the atomic masses of C32H39NO4 HCl, the molecular mass of allegra is 538.63 g/mol, to two decimal places.
Lithium is a meta element. Atomic mass of it is 7.
atomic mass
that there are stable isotopes of that element
Atomic mass is the total mass of protons and neutrons in an atom, which are whole numbers. Atomic weight, on the other hand, takes into account the abundance of different isotopes of an element, which can result in a weighted average that may be a decimal number.
the atomic mass is on some periodic tables and is the decimal. for example... for carbon the atomic mass is 12.01 on my periodic table that i am looking at go to this website. http:/www.ptable.com. it should have a periodic table and the atomic mass is on the very bottom of each box. for example the atomic mass for bromine is 79.904
It is 38.96
It is 39.10
65.465.465.465.4
I Believe You Are Referring To The Atomic Mass.
The mass number is the total number of protons and neutrons in an atom's nucleus, while the average atomic mass is the weighted average of the masses of all isotopes of an element based on their abundance in nature. The mass number is a whole number, while the atomic mass is a decimal value.
the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus. (atomic number) The mass of a given atom or molecule, expressed in atomic mass units. (atomic mass)
The molecular mass of allegra (fexofenadine hydrochloride) is calculated by adding the atomic masses of each atom in the compound. By summing the atomic masses of C32H39NO4 HCl, the molecular mass of allegra is 538.63 g/mol, to two decimal places.