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It has the same number of protons, otherwise it wouldn't be uranium.

The number of protons in the nucleus of an atom is called its atomic number.

Contrary to creationist claims, it is possible to make that determination, as the following will explain: By way of background, all atoms of a given element have the same number of protons in the nucleus; however, the number of neutrons in the nucleus can vary.

Radioactive elements "decay" (that is, change into other elements) by "half lives." If a half life is equal to one year, then one half of the radioactive element will have decayed in the first year after the mineral was formed; one half of the remainder will decay in the next year (leaving one-fourth remaining), and so forth.

The formula for the fraction remaining is one-half raised to the power given by the number of years divided by the half-life (in other words raised to a power equal to the number of half-lives).

We have rocks from the Moon (brought back), meteorites, and rocks that we know came from Mars.

We can then use radioactive age dating in order to date the ages of the surfaces (when the rocks first formed, i.e. We also have meteorites from asteroids and can date them, too.

After the second half-life has elapsed, yet another 50% of the remaining parent isotope will decay into daughter isotopes, and so on.

Texting has created a new brand of mobile etiquette, and for dating, it has given rise to new ways of flirting and even defining exactly what's going on between two people.

You can easily choose what to use to win a girl's heart or to cheer up a friend.

Scammers create fake online profiles using photos of other people — even stolen pictures of real military personnel. And they tug at your heartstrings with made-up stories about how they need money — for emergencies, hospital bills, or travel. Here’s how it works: The scammers set up dating profiles to meet potential victims.

Like most sports-based videogames, the Milestone-developed Moto GP series is an annual affair, and I had the opportunity to test out its latest, the Moto GP 17.