Question

Out of the three elements P, Q and R having

atomic numbers 11, 17 and 19 respectively,

which two elements will show similar properties and why?​

Answer 1

Answer:

P and R show similar properties

Explanation:

Bcz P n R have similar electronic configuration as they belong to same group. Thus, elements belonging to same group show similar properties...

So.. P n R show similar prop..

Answer 2

Answer:

element P and R have same property.

Explanation:

Because both have same valency and are in same group .

P=11==2,8,1

R=19==2,8,8,1