Question

answer the questions in the table below about the shape of the methyl (ch₃⁺) cation. how many electron groups are around the central carbon atom? note: one “electron group” means one lone pair, one single bond, one double bond, or one triple bond. what phrase best describes the arrangement of these electron groups around the central carbon atom? (you may need to use the scrollbar to see all the choices.)

Explanation:

Step1: Analyze bonding in methyl cation

The methyl cation ($CH_3^+$) has a central carbon atom bonded to three hydrogen atoms and has no lone - pairs on the carbon. Each C - H single bond is an electron group.

Step2: Determine number of electron groups

Since there are three C - H single bonds and no lone - pairs, the number of electron groups around the central carbon atom is 3.

Step3: Determine electron - group arrangement

According to VSEPR (Valence - Shell Electron - Pair Repulsion) theory, when there are 3 electron groups around a central atom with no lone - pairs, the electron - group arrangement is trigonal planar.

Answer:

How many electron groups are around the central carbon atom: 3
What phrase best describes the arrangement of these electron groups around the central carbon atom: trigonal planar