I just need some ideas of what to put for these on my homework examples for extra credit

Name a molecule that has:
A) Tetrahedral Geometry
B) Trigonal planar geometry
C) Linear Geometry
D) Bent Geometry

Certainly! Here are some examples of molecules with different geometries:

A) Tetrahedral Geometry:
One example of a molecule with tetrahedral geometry is methane (CH4). To determine this, you can look at the Lewis structure of methane and count the number of regions of electron density around the central carbon atom. In methane, there are four regions of electron density (four hydrogen atoms bonded to the carbon). This arrangement gives methane a tetrahedral shape.

B) Trigonal Planar Geometry:
An example of a molecule with trigonal planar geometry is boron trifluoride (BF3). Again, you can examine the Lewis structure of BF3 and count the number of regions of electron density around the central boron atom. In BF3, there are three regions of electron density (three fluorine atoms bonded to boron). This arrangement results in a trigonal planar shape.

C) Linear Geometry:
One example of a molecule with linear geometry is carbon dioxide (CO2). Once more, analyzing the Lewis structure of CO2, you'll find two regions of electron density (two oxygen atoms bonded to a carbon atom). This arrangement gives carbon dioxide a linear shape.

D) Bent Geometry:
A common example of a molecule with bent geometry is water (H2O). By examining the Lewis structure of water, you will find two regions of electron density (two hydrogen atoms bonded to an oxygen atom) and two lone pairs on the oxygen atom. This arrangement leads to a bent shape.

Remember, when identifying molecular geometries, it is helpful to draw the Lewis structure and count the regions of electron density around the central atom. This will guide you in determining the molecular geometry.