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.
Retirement Topics - Contributions. A contribution is the amount an employer and employees (including self-employed individuals) pay into a retirement plan. Limits on contributions and benefits. There are limits to how much employers and employees can contribute to a plan (or IRA) each year. The plan must specifically state that contributions or benefits cannot exceed certain limits. The limits differ depending on the type of plan. IRA Contribution Limits. 401(k) and Profit-Sharing Plan Contribution Limits.