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.
It was named eighteen years later by the chemist Chaptal. Nitrogen is a clear gas that has no smell when it is in its pure form. It is not very reactive when it is a pure molecule, but it can create very reactive compounds when combined with other elements, including hydrogen (H) in ammonia (NH 3).