Question

If the valence cell electronic configuration
ns2, the element will belong
to the a)alkali metal. b) alkaline earth metal. c) halogen. d) lanthanoide​

Answer 1

Answer:

) halogen

Explanation:

Answer 2

Answer: Alkaline Earth Metal

Explanation: The elements in Group 2 (beryllium, magnesium, calcium, strontium, barium, and radium) are called the alkaline earth metals (Figure below). These elements have two valence electrons, both of which reside in the outermost s sublevel. The general electron configuration of all alkaline earth metals is ns2.