Question

Write two dissimilarities between alkali metals and halogens.

Answer 1

Sr. No.	Property	Alkali Metals	Halogens
1.	Valence Electrons	They have 1 valence electron in their outermost shell.	They have 7 valence electrons in their outermost shell.
2.	Type of Element	They are highly reactive metals.	They are highly reactive non-metals.
3.	Ion Formation	They lose 1 electron to form positive ions (M+).	They gain 1 electron to form negative ions (X−).