Which of the following elements would you predict to have an anomalous electron configuration?
A)W
B)Mg
C)Al
D)Sb

Question

Quizplus · Accepted Answer

As we move from left to right in a period, the number of valence electrons increases by one. However, the electron configurations of transition metals can be anomalous because they involve the filling of d orbitals. W (tungsten) is a transition metal and its electron configuration is [Xe] 4f14 5d4 6s2, which deviates from the expected filling pattern of 4d6 5s2.

Which of the Following Elements Would You Predict to Have