How many of the following statements are correct according to Mendeleef's period table ?
(a) Mendeleef corrected the atomic weight of Be, In and Os
b) Ar-k, Te-I and Co-Ni are anomalous pairs.
c) Atomic weights of elements were corrected by using the relation Atomic Wt. (Eq.Wt) (valency)
d) Eka baron is scandium
e) Eka silicon is germanium
f) Eka aluminium is galium
g)This classification is based on valency
h) Mendeleef's law is based on atomic weights

Answer

8