Respuesta :

Answer:

straight to the point:

Explanation:

atomic radius of :

k = 280 pm

Ca = 231 pm

Mg = 173 pm

Be = 153 pm

Rb = 248 pm

pm means "picometers".

so knowing this we will have :(largest to smallest),

k

Rb

Ca

Mg and

Be.

hope this helps .