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.
Thus it has the same arrangement of atom centers and electrons as the methane molecule. If by some magic one could reach into the nitrogen nucleus in an NH4+ ion and turn off the charge on one proton, the result would be a methane molecule. The sole but crucial difference is that the ammonium ion has one more proton in the nucleus of the central atom and hence an overall charge of +1.