The median Social Security benefit was $16,295 for men and $11,999 for women in 2012, AARP found. Retirement savings. Just under a third (30 percent) of retirees receive income from either a traditional pension or take withdrawals from a retirement savings account such as a 401(k) or individual retirement account.
The Sodium atom. 1  The Na atom has an equal number of electrons and protons (11 e-and 11 p+). 2  This atom too is unstable because the outer valance shell of electrons has only one electron in it. 3  To be stable the outer shell of electrons should have eight electrons.
Valence electrons are the outermost electrons, and are the ones involved in bonding. Sodium has 11 electrons: its atomic number is 11, so it has 11 protons. Atoms are neutral, so this means that sodium also has 11 electrons Electrons are arranged in shells or energy levels. The first evel can have 2 electrons; The second level can have up to 8 electrons.