Give two examples of each of the following: (a) alkali metals, (b) alkaline earth metals, (c) halogens, (d) noble gases, (e) chalcogens, (f) transition metals.

Answer and Explanation:

(a) Alkali metals : The group 1 element in periodic table are known as alkali metals two examples are sodium (Na), potassium (K)

(B) Alkaline earth metals : The group 2 elements are known as alkaline earth metals examples are calcium (Ca), magnesium (Mg)

(c) Halogens : group 17th element are known as halogens examples are chlorine (Cl), fluorine (F)

(D) Noble gases : the group 18th elements are known as noble gases examples are argon (Ar), Helium (He)

(E) Chalcogens : The group 16th elements are known are chalcogens the examples are sulpher (S), oxygen (O)

(F) Transition metals : they are found in the middle of the periodic table examples are nickle (Ni) Copper (Cu)