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Directions: Each set of lettered choices below refers to the numbered statements immediately following it. Select the one lettered choice that best fits each statement. A choice may be used once, more than once, or not at all in each set. The following questions refer to the below molecules: (A) CO2 (B) H2O (C) CH4 (D) C2H4 (E) PH3 The molecule that has trigonal pyramidal geometry

Respuesta :

Answer:

The given molecules are:

(A) CO2 (B) H2O (C) CH4 (D) C2H4 (E) PH3

Which one has trigonal pyramidal geometry?

Explanation:

According to VSEPR (valence shell electron pair repulsion) theory, a molecule with a central atom having hybridization sp3 and with one lone pair of electrons has trigonal pyramidal geometry.

Among the given molecules,

CO2 has central atom carbon with sp hybridization without lone pairs.

So, it is a linear molecule.

H2O, the central atom is oxygen with sp3 hybridization and oxygen has two lone pairs. So, its geometry is V-shape or bent.

CH4 has central atom carbon with sp3 hybridization and no pairs.

So, its geometry is tetrahedral.

C2H4 ethene has carbon atoms as the central atoms with sp2 hybridization and carbon has no lone pairs.

So, its geometry is trigonal planar.

Answer:

PH3 has central atom P with sp3 hybridization.

P has one lone pair on it.

Hence, the geometry of PH3 is trigonal pyramidal.

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