In Mendeleev's periodic table, gap was not left for one of the following elements. This element is:
(a) gallium
(b) beryllium
(c) germanium
(d) scandium
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Solution
(b) Beryllium.
In Mendeleev's periodic table, a gap was left for gallium, scandium and germanium.
Concept: Merits of Mendeleev’s Periodic Table
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