What is the atomic weight of aluminium?
aadaasdark8072 > 06-28-2019, 08:51 AM
Atomic mass of any element ( except Hydrogen whose atomic is 1u ) is mostly (roughly) double of its atomic number ( for elements with lower atomic numbers as I have seen ).
Atomic number of Al is 13
and, its atomic mass is (roughly its double + 1 i.e. ) 27 u