Classification Of Elements And Periodicity In Properties Question 308
Dobereiner triads 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 Dobereiner’s law of triads, the atomic mass of the central element was nearly the arithmetic mean of the atomic masses of the other two elements.
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