how many protons are in molybdenum 10/Apr/2016 Molybdenum WikipediaThere are 35 known isotopes of molybdenum, ranging in atomic mass from 83 to 117, as well as four metastable nuclear isomers Seven isotopes occur naturally, with atomic Lis
DEFINITION of 'Elective-Deferral Contribution'. A contribution arrangement of an employer-sponsored retirement plan under which participants can choose to set aside part of their pretax compensation as a contribution to the plan. Also known as salary-deferral or salary-reduction contributions.. Next Up.
Catch-up contributions. If you are age 50 or over at the end of the calendar year, you are permitted to make additional, âcatch-upâ, elective deferral contributions. These catch-up contributions are not subject to the annual general limits that apply to 401k plans.hat this means for your 401k, 403b and other retirement plans: The maximum amount an employee can contribute to a 401k in 2012 will increase to $17,000 and for individuals over the age of 50, their catch-up contribution will remain unchanged at $5,500 (see table).