The noble gases are group 18 of the periodic table and are chemical elements with similar properties. All of the noble gases have a full outer shell. None of them have color, odor, and all have very low chemical reactivity. There are six of them and they are Helium, neon, argon, krypton, xenon, and radon.
Helium
Helium has an atomic number of 2. It is has no color, no odor, or no taste. It is also an inert monatomic gas. It is the first of the noble gases on the periodic table. It’s melting and boiling points are the lowest among all elements and only exists as a gas except in extreme conditions.
Helium is the second most abundant element in the universe, although not normally found naturally on earth but created by radioactive decay. Helium is one of the only elements with escape velocity which is when released into the atmosphere, it goes off into space. As a matter of fact helium is the only element to be found in space before being found on Earth. In 1868, an astronomer named Pierre Janssen was in India observing a solar eclipse. He was using spectroscope to help him with his observations, and while using it he saw a yellow line in the spectrum, which no one had ever heard of or saw. This indicated that the existence of an unknown element. Janssen named it helium after the Greek god Helios, otherwise known as Apollo, whom was associated with the Sun. Janseen got together with a well world known English astronomer Sir Joseph Lockyer who was best known for his work in analyzing light waves. Lockyer, just like Janssen, also believed that Janseen had discovered a new element. A few months later he also observed the same spectrum that Janseen had discovered. The spectroscope was still a new invention most of the science world did...
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Picture of Xenon
Radon
Radon is the final element of the noble gases. Its symbol is 86 and its atomic number is 86. It is colorless, tasteless, odorless and a gas. It is one of the densest substances that remains a gas under normal conditions.
Radon is formed as one part in the radioactive decay chains of thorium and uranium as they decay into lead. As radon decays, it produces decay products. These products stick to things in the air like dust particles. If these dust particles are inhaled the can stick to ones lungs and cause lung cancer. Several studies have proven that those who breathe in radon gas are more likely to have lung cancer than those who don’t. This therefore makes radon a considerable hazard in workplaces such as mechanic shops and ship yards. Radon poisoning comes in second to lives claimed from lung cancer only to cigarette smoking.
In chapter 8 titled "Radium (Ra)" of The Poisoner's Handbook by Deborah Blum, the most interesting story developed within this chapter was the death of dial workers at Orange, New Jersey after been exposed to radium every day. It was interesting due to the fact that radium was used everywhere in the community and was never thought it could harm anyone. Radium was a super element that was used everywhere, but its continuous use unmasked its fatal habits. As it was stated in the text, "Radiant health, the ads proclaimed-beautiful skin, endless vigor, and eternal health—ingesting radium seemed the next best thing to drinking sunlight." (Blum 179). People were accepting radium as a natural gold element but they haven't realized constant contact
Sulfur goes back to the ancient times but it was called brimstone. In 1979, a French chemist named Antoine Lavoisier recognized sulfur was an element and added it to his list of elements. The element sulfur is considered a nonmetal and is the 10th most abundant element in the universe. On the periodic table sulfur is in group sixteen and it is a representative element. Sulfur has an atomic mass of 32.07 with an atomic number of 16. There are three energy levels for sulfur the first energy level is two, the second energy level is eight, and the third energy level is six.
5). The high mortality rates are related to the environmental exposures of the coal mining along with other factors such as smoking, poverty, education, age, race and sex. “Higher lung cancer incidence and mortality in the Kentucky Appalachia is thought to result from higher smoking rates and correlates of poor socioeconomic conditions which limits the population access to health care” (Hendryx, O'Donnell, & Horn, 2008, p. 2). The population residing in coal mining areas, are exposed to contaminated water and air from the coal mining and there is a concern for respiratory illnesses related to the pollutants. The fumes or toxin released from the coal mine, this places the individual at a risk for respiratory issues such as emphysema, black lung, brown lung and
"Radon and Cancer - National Cancer Institute." Radon and Cancer - National Cancer Institute. National Cancer Institute, n.d. Web. 27 Apr. 2014.
Now I?m going to give you the chemical breakdown of neon. Neon?s atomic number is #10. Neon has 10 protons, 10 neutrons, and 10 electrons. It belongs to the Noble Gas section of the periodic table. Its atomic mass is 20.1797. All the noble gases have the maximum number of electrons possible in their outer shell making them stable and un...
Radon gas is currently the leading cause of lung cancer in the nonsmokers. Radon gas is harmless in small amounts but sometimes becomes concentrated in homes built on soil wi...
The elements on the periodic table make up everything in the world. Hydrogen is one of the chemicals that make up the bath bomb. Hydrogen is the building block for all the other elements of the periodic table (Basher, S., Dingle, A., & Green, D., 2015
Physical properties: fluorine is the first member of the halogen column. It is a greenish-yellow gas with a pungent, irritating odor, toxic, non-combustible but capable of oxidizing dangerously fast can burn everything in the air and even water, glass or sand. This is a very chemically active element.
The writings of some Greek philosophers may be considered to be among the very first chemical theories, such as the theory that all things are composed of air, earth, fire, and water. Each of these were represented by different elements, such as sulfur, salt, mercury, and, ideally, gold. Other ideas held by alchemists were that each of the known elements were represented by heavenly bodies. Gold was earth's representation of the sun, silver for the moon, mercury for the planet Mercury, copper for Venus, iron for Mars, tin for Jupiter, and lead for Saturn.
Mendeleev discovered the periodic table while attempting to organise the elements in February of 1869. He did so by writing the properties of the elements on pieces of card and arranging and rearranging them until he realised that, by putting them in order of increasing atomic weight, certain types of element regularly occurred. For example, a reactive non-metal was directly followed by a very reactive light metal and then a less reactive light metal. Initially, the table had similar elements in horizontal rows, but he soon changed them to fit in vertical columns, as we see today. Not only did Mendeleev arrange the elements in the correct way, but if an element appeared to be in the wrong place due to its atomic weight, he moved it to where it fitted with the pattern he had discovered. The real genius of Mendeleev’s achievement was to leave gaps for undiscovered elements. He even predicted the properties of five of these elements and their compounds. And over the next 15 years, three of these elements were discovered and Mendeleev’s predictions shown to be incredibly accurate. The discovery of the noble gases during the 1890s by William Ramsay initially seemed to contradict Mendeleev’s work, until he realised that actually they were further proof of his system, fitting in as the final
Gas is one of three states of matter. The gas state is composed of a group of molecules that move freely, independent of each other. There are certain properties that define gas and separate the state of matter from the other two states: solid and liquid. Many different energies, forces, and amounts greatly affect the behavior of any type of gas. These differences consist of pressure, temperature, volume and even the number of molecules of a gaseous element.
Some concepts of the gas state take time to fully understand. Provided in this essay were: the properties of gases and how the behavior changes as the variable does. Also included in the essay was the gas laws and Kinetic Molecular Theory. Each postulate was given to be able to fully grasp and understand. Some postulates were given into more detail while other postulates are more self-explanatory. From the information given you can determine the definition and effect of each but some people may wish to take this into more detail. If you wish to do so I have provided some of the sources used while typing this essay.
• Some are solid metal at room temperature, some are invisible gases, some elements readily react with other elements, whiles others hardly react at all.
Although, almost of the radioactive wastes come from manufacturing sources contain natural radioactivity called [NORM].After human processing these substances or concentrate them, it becomes technologically-enhanced naturally –occurring radioactive materials[TENORM].allot of this waste is alpha partials emitting matter from the decay chains of uranium and thorium .Also the potassium (the main source of radiation in human's body ) and rocks are considered as radiation sources even with their low level radioactivity .
Nitrogen is a colorless, odorless gas that can be found in group 15 of the periodic table. Nitrogen is represented by the symbol, N, and has an atomic number of 7. This element was discovered by Daniel Rutherford in 1772. Mr. Rutherford studied Edinburgh University where he began his research on this gas. It started with an experiment including a mouse in a small enclosed area, and from there concluded that the air being released by the mouse was what we know as Nitrogen. At room temperature this element is a gas. Nitrogen has an atomic number of 7, and its isotopes number 14. Other important things to note about this element is the electron configuration which is [He]2s^22p^3, as well as its density which numbers 1035 K.