Classification Of Elements And Periodicity In Properties Ques 147
Question: Dobereiner traids is [RPMT 1997]
Options:
A) $ Na $ , $ K $ , $ Rb $
B) $ Mg, $ $ S, $ $ As $
C) $ Cl $ , $ Br,I $
D) $ P, $ $ S, $ , $ As $
Show Answer
Answer:
Correct Answer: C
Solution:
According to Dobernier law of triads the atomic mass of the central element was nearly the arithmetic mean of atomic masses of other two elements.
