Two isotopes of copper are naturally occurring, with #""_29^63Cu# at 69.09% (62.93 amu) and #""_29^65Cu# at 30.91% (64.93 amu). What is the atomic mass of copper?
1 Answer
Feb 13, 2016
The weighted average atomic mass =
(63X69.09 +65X30.91)/100 =63.6182
