Question

Which has larger atomic radius Ca (20) or K (19). [CBSE 2016]

Answer 1

Answer:

Potassium ( k ) – > atomic number 19 has larger atomic radii.

Answer 2

k

Explanation:

thinking merely

you may see that atomic no. of k is less that that of ca

atomic no. of ca is 20

this means that 1 more electron is present in Ca. THIS DOESN'T MATTER!

atomic radius decreases as we move from left to right in a periodic table and increases as we move down a periodic table .So here atomic radius of K is greater than Ca...

thanks