The valence shell of the element X contains 2 electrons in a 5s subshell.Below that shell,element X has a partially filled 4d subshell.What type of element is X?
A)main group element
B)chalcogen
C)halogen
D)transition metal
E)alkali metal

Question

Quizplus · Accepted Answer

The fact that element X has a partially filled 4d subshell indicates that it is a transition metal. The presence of 2 electrons in the 5s subshell suggests that it is likely located in group 2, which are also referred to as the alkaline earth metals. However, since the question specifically asks for the type of element based on its subshell configuration, the best answer is D, transition metal.

The Valence Shell of the Element X Contains 2 Electrons