Question

In regard to defects of Mendeleev’s periodic table, chemically

__________ elements were grouped together​

Answer 1

Answer:

Coinage metals copper, silver, and gold elements are, grouped together with alkali metals. Manganese metal is, grouped with totally different halogens in the seventh group. Hydrogen resembles both alkali metals in some respect and halogens in some other respects.

Answer 2

Answer:

different

Explanation:

chemically different elements were grouped together