Question

Consider the group 1A elements sodium (period 3), potassium (period 4), and rubidium (period 5). What would you predict about the ionization energies of these elements?
A.
Na < K < Rb
B.
Na > K > Rb
C.
Rb < Na < K
D.
Na = K = Rb

Answer 1

Answer:

B.)

Explanation:

because it requires a lot of energy to take out electron from sodium's valence shell as it close to nucleus as compared to other two elements

Answer 2

Answer:

B Step By Step I did this Easy