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.
You don't ever have to take money out of your account. If you do take money out, it can be done at any time and in any amount once you pass the age of 59 1/2 and the account has been open at least five years.If you keep working past the age of 70 1/2, you can continue to contribute to your Roth IRA.he answer differs if you hold the tax-deferred traditional IRA or the tax-free Roth IRA. In both cases, the minimum age from which you can take distributions without penalty is 59 1/2. If someone leaves you an IRA, the rules are more complicated and depend on the decedent's age.