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 a tetrahedral molecule the bonds are 109 degrees, water can be considered tetrahedral with two of the bonds being the lone pairs and the other ones with the hydrogen. The high electronegatvity of the lone pairs tends to push the hydrogens away and means the bond angle between the hydrogens is closer to 104.5 degrees.I would have thought that with similar electronegativities between H and F that your answer is probably the same as that of water. Source(s): KB Â· 5 years ago.he high electronegatvity of the lone pairs tends to push the hydrogens away and means the bond angle between the hydrogens is closer to 104.5 degrees. I would have thought that with similar electronegativities between H and F that your answer is probably the same as that of water. Source(s): KB Â· 5 years ago.