There are four naturally occurring isotopes of
the element chromium. the relative abundance
of each is
50cr 4.345% 49.946044 amu
52cr 83.789% 51.940508 amu
53cr 9.501% 52.940649 amu
54cr 2.365% 53.93880 amu
find the average atomic mass of chromium.
1. 51.996 amu
2. 53.2503 amu
3. 52.061 amu
4. 52.978 amu