defence exam SSB Head Constable (Communication) 2023 Mock Test Chemistry S - Block Group 1 Elements (Alkali Metals)
What are the special features of the following group of elements?
1. All these elements are metals
2. All these elements react with water to form hydrogen gas
3. All these elements have a valency 1
1
Halogen group
2
Alkali metal group
3
Alkaline earth metal group
4
Alkali Metals and Halogen Groups