Question

Given that A,B, C is a triads. Atomic mass of
A and C are 32, 125 respectively. Then
what is the atomic mass of B
is ( )
a.157
b.93
c.78.5
d.75.5
PLZ SAY ONLY CORRECT OPTION PLZ SAY FAST URGENT ​

Answer 1

Answer:

Mark me as a Brainlist plz text.

Explanation:

According to Doberiener

law of triads : Dobereiner stated in his law of triads that the arithmetic mean of the atomic masses of the first and third element in a triad would be approximately equal to the atomic mass of the second element in that triad. ... Three more triads were identified by the year 1829.

$A = 32 \\ and \\ C= 125 \\ according \: to \: Doberiener \\ \: law \: of \: triad \\ B \: = \frac{A + C}{2} \\ B = \frac{32 + 125}{2}$

$B = \frac{157}{2} \\ B = 78.5$

option c is the correct answer