Question

5. The elements A,B and C have the atomic numbers 12,16 and 20
respectively..which two will show similar properties. Give reason ... pls answer

Answer 1

Answer:

atomic no. 12 is Mg and atomic no. 20 is Ca both are s block element 2 nd group

Answer 2

Answer:

(A) and (C) have similar properties.

Explanation:

Because they are present in same group in periodic table i.e 2A group elements.

we know that elements belonging to the same group definitely will have similar properties.

These are called alkali earth metals because the hydroxides and oxides are alkaline in nature and metal oxides of these elements occur in earth crust.

Atomic number : 12 (Magnesium).

Atomic number : 20 ( calcium).