An element X has the following isotopic composition, 200 X : 90% . 199 X: 8.0% , 202 X : 2.0%.The weighted average atomic mass of the naturallyoccurring element X is closest to:

An element X has the following isotopic composition, 200 X : 90% . 1

1.	An element X has the following isotopic composition, 200 X : 90% . 199 X: 8.0% , 202 X : 2.0%.The weighted average atomic mass of the naturallyoccurring element X is closest to:
Answer» average ATOMIC mass=20090+1998+202*2/100=19996/100=199.96average atomic mass is nearly EQUALS to 200 amu