1.

Match the columns:Column IColumn II(1) Helium(a) Alkali metal(2) Horizontal row(b) Alkaline earth metal(3) Group I(c) Period(4) Group II(d) Zero group(e) Metalloid

Answer»

(1) Helium – Zero group 

(2) Horizontal row – Period 

(3) Group I – Alkali metal 

(4) Group II – Alkaline earth metal.



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