Question

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
A. 52.061 amu

B. 52.978 amu

C. 51.996 amu

D. 53.2503 amu