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This is my element report. I hope you will enjoy reading it. It has lots of information you will enjoy. So keep on reading and learn all about these three elements krypton, arsenic, and radium.
Krypton’s sign is Kr and its atomic number is 36. The boiling point is -153.22 oc and the melting point is -157.36 oc. The people who discovered krypton were Sir William Ramsey and Morris William Travers. Sir William Ramsey also found cadmium, neon, and argon. The year it was discovered was 1898 and it as discovered in London, England. Krypton is a gas that does not do damage if you inhale it. Unless you inhale it with no air if you do you can suffocate. The name krypton comes from the Greek word kryptos which means hidden.
Arsenics sign is AS its atomic number is 33. The boiling point is 614 oc the melting point is 817 oc. the person who discovered it was Albertus Magnus in the year 1250. The place is unknown arsenic is used in pesticide and wood preservatives. It is in metal for mirrors, in shotgun pellets, and lasers. If you inhale it you can get lung cancer and if you touch with bare skin you can get skin cancer. It is from the Greek word arsenikon which means yellow orpiment. It is a steel gray semimetal it can also damage liver and intestines.
Radium was discovered by Marie Sklodowska Curie and Perre Curie. It was discovered in Paris, France the atomic number is 88 and its sign is Ra. The boiling point is 3158.6 ofarenheit and the melting point is 1292 ofarenheit. Radium is from the Latin word radius which means ray. It is a radioactive metal that has a silvery white color. It is very radiotoxic if you breathe it, eat it, touch it, or have any exposure of it. It is used to treat cancer because it gives off gamma rays. It is found in uranium ores at 1 part per 3 million parts uranium. It was used to make glowing paint but it is not that common.
Article posted May 17, 2012 at 12:12 PM •
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