* Great stability * Except krypton and xenon‚ elements in noble gases are totally inert chemically * The noble gases are all found in minute quantities in the atmosphere‚ and are isolated by fractional distillation of liquid air. | helium | 1s2 | neon | [He]2s22p6 | argon | [Ne]3s23p6 | * Transition Metals * Group 1B and 3B-8B * Incompletely filled d subshells * Readily produce cations * ductile and malleable‚ and conduct electricity and heat * exhibit
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In January 1950 president Truman made the decision to continue the research and development of thermonuclear weapons. He wrote a letter to Crawford H. Greenewalt asking him to take charge of overseeing the designs‚ construction‚ and operation of the new site to produce plutonium. They set up distant sites across the country and ended up having operations in 32 states. During the Manhattan Project the main focus was on the development of fission weapons but work on the hydrogen bomb was also taking
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proton‚ 2 neutron‚ 2 electron= Helium (other types elements) * There are many types of elements and it depends on the number of proton‚ neutron‚ and electron. ATOMIC NUMBER * Elements are arranged in the periodic table (Jadual berkala) * Atomic number =Number of proton in Nucleus. (No of proton=No of electrons) Example: 1 proton‚ 1 electron = Hydrogen (Atomic Number 1) in neutral (neutral) state (pada keadaan asal) 2 proton‚ 2 neutron‚ 2 electron= Helium (Atomic Number 2) in normal
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Casey Haddox CP English II Ms. Walsh June 3‚ 2012 Oscar Wilde Oscar Wilde’s hopeful and romantic voice welcomes readers to a different point of view on poetry and life. Wilde uses strong and bold words to emphasize what he is truly feeling and to set a tone for the reader. He is a passionate and idealistic writer and isn’t afraid to express real emotion to his audience. His writing truly portrays his characters and refers to his past and real events that he had gone through. Was Oscar
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Periods 1‚ 2‚ & 3 The first three rows of the periodic table‚ called periods 1‚ 2 and 3‚ corresponding to the n=1‚ n=2 and n=3 levels‚ visible in the green numbers to the left. Hydrogen is seen to have 1 electron in the 1s level‚ and to the right‚ helium‚ in Group
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Rolex is another prominent Swiss watch-producer esteemed for the salient quality of its products‚ which is - naturally - reflected in the prices‚ ranging from thousands to hundreds of thousands USD. That is a reason of why Rolex watch became symbolic of rich celebrities. The founding fathers of the Rolex SA company were two relatives - the German Hans Wilsdorf and his brother-in-law Alfred Davis‚ who in 1905 launched their business‚ firstly not based in watchmaking‚ but rather in mere importing
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Criminal Case Defense Analysis Criminal Case Defense Analysis When a person gets arrested for a crime‚ that person will remain a suspect until proven guilty otherwise in court. This person will then have the chance to avail himself with the best legal representation available. “A defense consists of evidence and arguments offered by a defendant and his or her attorney(s) to show why that person should not be held liable for a criminal charge” (Schmalleger‚ 2010). Generally speaking
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the naked eye‚ and it became the first planet to be seen through a telescope. It was discovered on March 13‚ 1781 by William Herschel. It has 27 moons and 13 rings. Uranus is known as the "ice giant" because it has a hydrogen upper layer and helium is mixed in it. Below is an icy mantle and it surrounds rock and ice core. The upper atmosphere is made of water‚ ammonia‚ and the methane of ice crystals that gives it its pale blue color. The temperatures of Uranus is colder than any other
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and subatomic particles. This exploded and began expanding rapidly outward. As it expanded it cooled and electrons‚ protons and neutrons formed. As the universe grew in size‚ the temperature dropped‚ which eventually formed huge numbers of Hydrogen‚ Helium and Lithium nuclei. After many millions of years the expanding universe‚ at first a very hot gas‚ thinned and cooled enough to condense into individual galaxies and then stars. Stars and galaxies began to form about one billion years following the
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The Components Of Earth’s Atmosphere And How Our Climate Is Affected By Volcanic Eruptions Introduction The atmosphere is all that lies between us‚ and the vast and unforgiving conditions of space. It absorbs energy from the sun‚ protects us from radiation‚ supports the cycle of water and other chemicals‚ and interacts with Earth’s magnetic fields to give us a climate capable of supporting life. Without it there would be no water‚ no air‚ no life. So we must protect it. But to protect
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