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.
So you have the standard orbitals, (1s, 2s, 2p etc). 1  All atoms posses a standard fully hybridized tetrahedral shape, thought some are contorted by the following factors. ~ 2  Lone pairs will push the lobes away via valance pair electron repulsion theory.