Question

5. Atomic weight of Barium is --- if
Calcium's is 40 and Strontium's 87.5
according to triad.[]
A) 173
B) 137
C) 80
D)
63.4​

Answer 1

Answer:

According to triad, the mass of the first and third element it's average is equal to the mass of 2nd element.

Hence 40+87.5/2 = 63.75

Hence answer is option d) 63.75 or 64 estimated value.