In 2012, the median income of retiree aged units (with no earnings from work) age 65 and over with pensions and Social Security was more than twice the income of aged units receiving only Social Security.
EXAMPLE:: Assign a formal charge to the nitrogen in the compound shown below. 1  Nitrogen is in group five; thus, it has five valence electrons. 2  Number of non-bonding electrons: there are no non-bonding electrons, so this is zero.
This chemical compound is composed of one tin ion, which is ionically bound to two NO3, or nitrate ions. The tin (II) ion has a 2- charge. Nitrate is a polyatomic ion with a 1- charge. Nitrate has a trigonal planar geometry, with a central nitrogen atom and three surrounding oxygens. The nitrogen atom carries a 1+ charge, while the three oxygens carry a 2/3- charge. Nitrate carries an overall 1- charge.