Answer to Question #246080 in General Chemistry for Danmanya

Question

An element X with atomic number 29 has two isotopes Y and Z have 34 and 38 neutron respectively. (1) calculate the mass number of each isotopes and hence write their nuclear symbol (2) percentage abundance of each isotopes if relative atomic mass of element is 36.5

Answer 1

29= (X.34 +(100-X).38)/100

2900= X.34+(100-X)38

2900= 34X+ 3800-38X

2900-3800= -4X

-900= -4x

X = 225