Question

What is Doberners traid atomic mass of element ABC A=10.8 B=12.1 C=? ​

Answer 1

Explanation:

according to doberniers traid when the elements are arranged in ascending order the mass of middle element is the mean of masses of other two elements

for instance let the elements be a,b,c

a=10.8

b=12.1

to find c

we know, b = a+c/2

c=2b-a

c= 2*12.1-10.8

c=13.4

hope it helps you :)