A molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms. Look at the model of oxygen above.The two balls represents the two oxygen molecules. molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms. Look at the model of oxygen above.
A Roth IRA is funded with after-tax money. With a Roth, you pay taxes before you contribute and will only owe taxes on the earnings, not your contributions, when you withdraw money. You can withdraw money without penalty from a traditional IRA once you reach age 59 1/2, and you must begin taking money out at 70 1/2.
An IRA has additional withdrawal options which avoid the 10% early withdrawal penalty. With an IRA, you can withdraw money for a first-time home purchase, educational expenses, or elect substantially equal periodic payments paid over your life expectancy without penalty.dditional post-employment withdrawals must be either for the entire amount in TSP or in a series of payments. While you are employed with the federal government, you can only take money out of TSP for two reasons: a financial hardship, or a one-time, age-based withdrawal (at age 59 Â½ or older).