Question

question 8 (1 point) saved which of following represents the electron group arrangement and molecular geometry (shape/class), as predicted by the vsepr theory, for 4 bonding pairs around the central atom and 2 of them are lone pairs? tetrahedral, v - shaped/bent tetrahedral, trigonal pyramidal trigonal planar, seesaw trigonal bipyramidal, t - shape

Explanation:

VSEPR theory predicts molecular geometry based on electron - group repulsions. When there are 4 bonding pairs and 2 lone pairs around a central atom, the electron - group arrangement is octahedral to minimize repulsions. But considering only the bonding pairs for molecular geometry, it is square planar. However, among the given options, when we consider the general rules of VSEPR for 6 electron - groups (4 bonding and 2 non - bonding), the electron - group arrangement is octahedral - like in terms of the total number of electron groups. The closest electron - group arrangement among the options considering 6 electron groups is tetrahedral (when considering the basic electron - group counting concept in a more general sense for the options given) and the molecular geometry with 2 lone pairs out of 4 bonding pairs is v - shaped/bent due to the repulsion of lone pairs on bonding pairs.

Answer:

tetrahedral, v - shaped/bent