This type of clothing should not be worn for parties, weddings and other formal or ceremonial events. They should not also be worn for work. Various items of clothing such as tee-shirts, denims, khakis, jackets, hoodies, mini-skirts, summer dresses, loafers, sneakers, and sandals are casual wear.
The presence of a lone pair decreases the bond angle between the bonding pair of electrons, due to their high electric charge which causes great repulsion between the electrons. They are also used in the formation of a dative bond.
In the next structure, each lone pair is at 90Â° to 3 bond pairs, and so each lone pair is responsible for 3 lone pair-bond pair repulsions. Because of the two lone pairs there are therefore 6 lone pair-bond pair repulsions. And that's all.