Assume that you have a new "triad" of elements (A,B and C)with similar properties.A is the smallest element and has a mass of 30 u.C is the largest element and has a mass of 90 u.The mass of B would be approximately ________ u.
A) 40
B) 45
C) 60
D) 80

Question

Quizplus · Accepted Answer

In a triad, the atomic mass of the middle element (B) is approximately the average of the atomic masses of the other two elements (A and C). So, (30 + 90) / 2 = 60 u.

Assume That You Have a New "Triad" of Elements (A,B