Question

which list contains of elements that have the most similar chemical properties?
mg. al and sb
n. f. ar
na. k and rb
k. al. and ni

Explanation:

Elements in the same group (vertical column) of the periodic table have similar chemical properties. Na (sodium), K (potassium), and Rb (rubidium) are all in Group 1 (alkali metals). Mg is in Group 2, Al in Group 13, Sb in Group 15. N is in Group 15, F in Group 17, Ar in Group 18. K is Group 1, Al Group 13, Ni Group 10. Only Na, K, Rb are in the same group.

Answer:

Na, K and Rb