Most people in the United States get enough vitamin A from the foods they eat, and vitamin A deficiency is rare. However, certain groups of people are more likely than others to have trouble getting enough vitamin A: Premature infants, who often have low levels of vitamin A in their first year.
The Negative Pledge. Banks have traditionally used a device known as the negative pledge (âNegative Pledgeâ) in lending documents. The Negative Pledge is an agreement whereby a borrower-pledgor promises a lender not to place a lien on pledgorâs property.
The other atom of the pair, also typically F, N, or O, has an unshared electron pair, which gives it a slight negative charge. Mainly through electrostatic attraction, the donor atom effectively shares its hydrogen with the acceptor atom, forming a bond. Because of its extensive hydrogen bonding, water (H2O) is liquid over a far greater range of temperatures that would be expected for a molecule of its size.