Question

The atomic weights of $Be$ were corrected by Mendeleev using the formula:

• A. $\sqrt{v}=a(z-b)$
• B. $mvr=\frac{nh}{2\pi }$
• C. atomic weight $=$ equivalent weight $\times$ valency
• D. equivalent weight $=$ atomic weight $\times$ valency

Answer 1

Answer: (C)

atomic weight $=$ equivalent weight $\times$ valency

Based on the position in the periodic table, Mendeleev corrected the atomic masses of some elements such as beryllium, indium, gold and platinum.
He corrected the atomic mass of beryllium from $13.5$ to $9$.
He used the formula atomic weight$=$equivalent weight $\times$ valency.