Question

6. a) Name two elements whose properties were correctly predicted by Mendeleev.

b) Mention their present day name.
c) What is their position in Modern periodic table?
d) Classify them as metal, nonmetal or metalloid?

Answer 1

Eka aluminium and Eka boron are two elements present name are gallium and scandium
gallium is in group 13 of periodic table and scandium is first transition element
Gallium is metal...scandium is also metal
Scandium is a d block element