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.
Total valence electrons is 8 Ca -- S (-- is single bond) this needs 6 more electrons as a single bond is only 2 electrons So you put 3 lone pairs on each atom but this makes it so there are 14 electrons Take 2 lone pairs off of both atoms so each Atom only has 1 Lone pair The 4 lone pairs you took off of the atoms become a triple bond between Ca and S.