Question

How many groups and periods are present in the Modern Periodic Table? In which groups are alkaline metals and inert elements placed in this periodic table?

Hint:

Group number indicates the number of valence electrons, while period number indicates the number of shells. Group 1 contains the most reactive metals (alkali metals), and Group 18 contains inert gases with fully filled outer shells.

Answer 1

The Modern Periodic Table consists of:


18 groups

7 periods


Alkali metals (like Lithium, Sodium, Potassium) are placed in:


Group 1


Inert elements or noble gases (like Helium, Neon, Argon) are placed in:


Group 18