Which outer electron configurations would you expect to belong to a metalloid? ns² b. ns²np⁶ c. ns²np⁵ d. ns²np²

Video transcript

Hello everyone today, we are being asked to identify which of these valence electron configurations corresponds to an alkaline earth metal. Recall that alkaline earth metals are in group To a and therefore have two valence electrons. Furthermore, the exponents that are in front of these orbital's. In these examples, S and P. They add up to the total number of valence electrons and therefore answer choice D is the only one where the exponent adds up to two to represent the number of valence electrons. I hope this helped, and until next time.