1.

(1) Match the column:Column I(i) Helium(ii) Horizontal rowColumn II(a) Period(b) Group(c) Zero group

Answer»

(i) Helium - Zero group(ii) Horizontal row - Period

Explanation:Helium belongs to the Noble gas and is placed in the zero group.In a periodic table horizontal rows are called periods and vertical columns are called groups.



Discussion

No Comment Found