niton after the latin word for shining like nitons. Radon means or chemical element of atomic number of 86 and rare radioactive gas by the following of noble gas. The atomic mass is 222 for this element. There is 86 protons a nice almond and 136 neutrons. There is usually today eight electrons pair a shell. This element is a nonmetal and that means that it This element is a nonmetal and that means that it doesn’t have anything to do with a metal substance. This element was discovered by Friedrich
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mass number is equal to a.a. The sum of the number of protons and neutrons a.b. The sum of the number of protons‚ neutrons‚ and electrons. a.c. The sum of the number of the neutrons and electrons. a.d. The sum of the number of the electrons and protons. 6) (3 points) Determine the number of protons‚ neutrons‚ and electrons in: C 7) (3 points)Determine the number of protons‚ neutrons‚ and electrons in: 8) (3 points) Write the
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Atoms Atom is the fundamental building block of all stuff‚ or what scientists like to call "matter". An individual atom is very small. In fact‚ the smallest type of atom‚ hydrogen‚ has a diameter of 10-8 cm. Every single object is composed of atoms. Our body is made up of many‚ many individual atoms. There are also many different types of atom. These different types are called elements. Examples of some elements are hydrogen‚ oxygen‚ and helium. Under normal conditions many atoms can stick together
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The PET scan‚ or Positron Emission Tomography‚ was born in 1973 at Washington University. It was created by Edward Hoffman‚ Michael M. Ter-Pogossian‚ and Michael E. Phelps; Phelps is most often credited with the invention (History of PET and MRI‚ 2009). In preparation for a PET scan‚ radioactive tracers are injected into the body‚ inhaled‚ or ingested by the patient through a solution that they drink. Then the scan will actually begin‚ as the patient lies on a table‚ which glides into the machine
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Neon Have you ever known that behind those older television set screens that there were Neon tubes inside? Ever since it was discovered‚ Neon has become more and more popular. From TV tubes to Cryogenics to Neon signs to even lasers. Neon has been a vast element that can be used widely because of its unique chemical and physical properties. Neon has many interesting properties and they include: Neon’s atomic number is ten. It has an atomic mass of roughly 20.180. Represented with the symbol Ne. Neon
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cannot break it any further? Democritus thought is eventually had to be unbreakable. He finally concluded that at some point there is the smallest bit of matter and he called these basic particles atoms. Today we know that Atoms contain protons‚ neutrons‚ electrons‚ and a nucleus. The nucleus is in the center of the atom. It is so small that its diameter is 100‚000 times smaller than its atom. Electrons float around the nucleus and determine the chemistry of an atom. Here’s a fun fact for you. Did
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All Single-choice 10 multiple choice material 2. Which pair of atoms/ions has same # of electrons? 32p and 32s 15e 16e- Al 3+ and Cl- 10e- 18e- Xe and I- 54e- 54e- 13C 14N 6e- 7e- ^ the 13 on C is mass number. = # protons + # neutrons. 3. N2 + 2 O2 + Cl2 -> 2 NO2 Start with 6 mol N2‚ 4 mol O2‚ 4 mol Cl2‚ Find limiting reagent and amounts remaining of excess reactants N2 + 2 O2 + Cl 2 6 mol 4 mol 4 mol start Max yield x (2mol No‚Cl/ 1 mol N2) Of No2Cl = 12 mol 4
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Isotopes in Agriculture An isotope is a two or more atom that has different mass number but the same atomic number. An isotope is a variation of an element with a difference in the normal number of neutrons. The increased mass of an isotope can cause the chemical reactions they are used in to progress more slowly than a reaction that does not use isotopes. Not all isotopes are radioactive and there are many uses for them. They can be used in medicine‚ diagnose‚ nutrition‚ agriculture‚ research
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Today‚ many countries are depending more and more on nuclear energy to produce electricity. Although‚ nuclear energy can bring many benefits‚ such as nuclear fission‚ which releases no carbon dioxide‚ it also brings many risks to many countries that use nuclear energy. This was proved‚ in many disasters that nuclear energy caused years ago‚ like the Chernobyl Disaster in April 26‚ 1986‚ which was said that‚ “the radiation released was to be 200 times that of Hiroshima and Nagasaki nuclear bombs
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Isotopes of Paperclipium Purpose: To determine the isotopic composition of the element‚ paperclipium. Background Information: Isotopes are atoms of the same element with the same proton number but different mass number; that is‚ the number of neutrons differ. Isotopes of the same element have the same electronic configuration as they have the same number of electrons. This accounts for the fact that their chemical properties are the same‚ as the react similarly. However‚ their physical properties
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