Besides, the molecular geometry of water is bent molecular geometry because the lone electron pairs, although still exerting influence on the shape, are invisible when looking at molecular geometry. The 2 lone electron pairs exerts a stronger repulsion on the two bonding pairs of hydrogen atoms to create a slight compression to a 104^obond angle. In addition to that water is a polar. That is, it has one side that is positively charged and one side that is negatively charged. If you may be wondering how the presence of one pair affect the geometry aspect of water it is because there are two pairs of lone pair electrons in water , lone pair of electrons is pushing the two bonding pairs down, causing them to be closer together than if there were no lone pairs. This bent  of the bonds gives the molecule its shape.

This molecule is made up of 4 equally spaced  sp3  hybrid orbitals forming bond angles of 109.5o. The shape of the orbitals is tetrahedral. Since there is an atom at the end of each orbital, the shape of the molecule is also tetrahedral.

An example of tetrahedral electron pair geometry and molecular geometry is  CH4 . The carbon has 4 valence electrons and thus needs 4 more electrons from four hydrogen atoms to complete its octet. The hydrogen atoms are as far apart as possible at 109o bond angle. This is tetrahedral geometry. The molecule is three dimensional.

.what is polarity of methane?

So, first off, methane (CH₄) is nonpolar because its C—H bonds do not have great enough of an electronegativity (EN) difference for the bond to be considered polar. EN is an element’s ability to draw electrons towards itself in a bond. A polar bond requires a significant EN difference, so that the electrons are significantly drawn towards one atom and away from the other; the electrons being unequally distributed result in the partial charges of the bond that make the bond polar.

 Carbon has an EN of 2.55, while Hydrogen has an EN of 2.20. The difference in ENs is therefore only 0.35, and many people agree that bonds need to have a difference of ENs at least 0.4 in order to be considered polar. Thus, methane cannot be polar, since its bonds are nonpolar.
However, even if the bonds were polar, methane would still be nonpolar, due to its molecular geometry. Methane has no lone pairs of electron. Thus, this causes the pair to be further than each other which is 109.5 degree bond angle that bring the tetrahedral geometry molecules.

 

 

cl2 is a diatomic molecule that consists of two chlorine atoms held together by a covalent bond. its electronic geometry is tetrahedral and the molecular geometry is linear. in Cl2 not one atom is pulling electrons away from the other, they are equal. so it's called "non-polar". 

 

chlorine, with seven valence electrons, is one electron short of an octet. If two chlorine atoms share their unpaired electrons by making a covalent bond and forming Cl2, they can each complete their valence shell. The electron pair being shared by the atoms is called a bonding pair while the other three pairs of electrons on each chlorine atom are called lone pairs. Lone pairs are not involved in covalent bonding. Hence, chlorine has 3 lone pairs. That’s all from me thank you for reading :))))

To determine if SO3 is polar we need to look at the molecular geometry or shape of the molecule. Polarity results from an unequal sharing of valence electrons. In SO3 there is the sharing is equal. Therefore SO3 is a nonpolar molecule
 
 We can see that there are three atoms attached to the central Sulfur (S) atom and there are no upbonded electron pairs (also called a lone pair) on the Sulfur. Based on VSEPR Theory (Valence Shell Electron Pair Repulsion Theory) the SO3molecular shape will be Trigonal Planar.