An atom, X, has a tetrahedral electron geometry but a trigonal pyramidal molecular shape. How many atoms is atom X bonded to?
A) 0
B) 1
C) 2
D) 3
E) 4

Question

Quizplus · Accepted Answer

A tetrahedral electron geometry means that there are four electron groups around the central atom. However, the trigonal pyramidal molecular shape tells us that one of these electron groups is a lone pair, so there are only three atoms actually bonded to the central atom X. Therefore, the correct answer is choice D.

An Atom, X, Has a Tetrahedral Electron Geometry but a Trigonal