Atom and Electron Dot Diagram

The students created a macroscopic, three-dimensional (3D) model of several properties of the periodic table. They explained in their own words the following terms: atomic radii, ionic radii, first ionization energy, and electronegativity. Lastly, they identified, described, and explained the patterns observed in the 3D periodic tables for the following element properties: atomic radii, ionic radii, first ionization energy, and electronegativity.

The most stable form of chromium is its trivalent oxidation state which is primarily found geologically as chromite (FeCr2O4) (Cervantes et al., 2001). Cr (III) is naturally occurring, whereas Cr (VI) is of anthropogenic origin. This

Strontium is a chemical element with symbol Sr and atomic number (protons in nucleus) 38 and atomic weight 88.1 It is a soft, silver-gray metal, and has physical and chemical properties like to Calcium and Barium. It is available as four stable isotopes ubiquitously (Isotopes are differ in forms of an by number of protons in nucleus but possess a variable number of neutrons.) Strontium-88 is the most dominant among other forms, comprising 83% of natural strontium, where in additional three stable isotopes and their relative abundance are strontium-84 (0.6%), strontium-86 (9.9%), and strontium-87 (7.0%). Strontium is available ubiquitous vitally as as celestite (SrSO4) and strontianite (SrCO3), and it comprises about 0.025% of the earth’s crust. There are 16 major radioactive isotopes of strontium, but only strontium-90 has a half-life sufficiently long (29 years). In comparison with half-lives of remaining strontium radionuclides are fewer than 65 days. Strontium-90 decays to yttrium-90 by decaying a beta particle, and yttrium-90 decays by decaying a energetic beta particle with a half-life of 64 hours to zirconium-90. The key health concerns for strontium-90 are associated to the energetic beta particle from yttrium-90.2

-Oxygen (8), silver (47), cesium (55). 3. Rank the following elements according to how difficult it is for them to lose an electron: cesium, Cs, atomic number 55; silver, Ag, atomic number 47; oxygen, O, atomic number 8. List the element that has the most difficult time losing an electron last.

Healthcare has evolved tremendously over the last few decades. Technology, being one of the biggest impacts has reached new heights and has advanced our learning and knowledge to places unimaginable. Many different modalities take place in the health field to ensure the greatest treatment for everyone with improving outcomes. Three modalities that have enhanced and have taken special roles in 3-D imaging include, CT scans, MRI, and Ultrasound; each with their own advantages and disadvantages. These modalities all require training, are cost effective, and take a specific amount of time to obtain all the necessary information. These same modalities have different traits regarding the use of radiation, contrast, evidence

Magnetic Resonance Imaging (MRI) is a way of medically imaging the body with the use of a magnetic field and radiofrequency waves. (1) As image quality of MRI continues to improve, more MRI exams are being ordered. Increasing MRI exams leads to increased wait times. Due to current wait lists, the health status of patients may decrease, influencing the type of treatment the patient will require once removed from the wait list. (7) The advances in technology have increased in the past decade, with MRI procedures are vastly growing to provide superior diagnostic quality compared to other modalities. New technologies are also allowing for faster scan times and further increased image quality. (9)

Thus increasing the ionization energy. Notably, the ionization energy increases drastically after all the valence electrons in the outermost energy level is removed. Since both element #1 Li and element #2 K are in group 1 and have 1 valence electron originally, the ionization energy increase drastically right after the first ionization energy. For element #1, Li, the ionization increased from 520.2 to 7298 between the first and second ionization energy. For element #2, K, the ionization increased from 418.8 to 3052 between the first and second ionization energy.

And since the energy level here (4) is less than that of the prior blocks (6 and 5) the electrons are added to the inside of the atom, which will repel on the outer electrons, making the atom even larger. You could say that with these electrons comes more than 30 additional protons. But like I said, distance is most important than magnitude of the charges. Larger atom generally means lower ionization energy, and higher reactivity. Chemical reactivity is important to life. Whether it's in preparing food to make it taste good, or in taking the energy out of food so we can live, chemical reactivity is everywhere. Bonds are often the natural state of all the atoms on the periodic table. It’s useful to know the most readily reactive metal, so we can study why that is, and what makes it the most reactive. Francium is the most reactive metal, because of the logical extrapolation of the data. Because of the layout of the periodic table, and the trends present, we can have a greater understanding for the atomic structure of the elements, and what that means in relation to the other

Doug Dietz who was the designer of MRI machines was very curious about the reactions of the patients who needed this machine for diagnosing their disease. On a customer survey, he found results which helped him to define and develop the problem with his machines. Adults being the matured lot of the society understood what the machine does and what are its consequences but children were not able to relate that machine was up to something good. The original design problem was that it looked like something very dangerous with a very dull environment rather than something which would be able to cure the problem, especially to children. Thus he devised a unique plan to solve this problem. He first tried to understand the psychology of children as

The trend of the ionic radius is shown by the size of the ionic radius shields the outermost electrons by the inner-shell electrons and this shows that the outer shell electrons won’t fell a positive charge of

For: The atomic-structure has come a long way since the twentieth century. Many scientific discoveries have been made in the past hundred years, including the development of MRI and X-ray imaging. MRI’s provide the technology to be able to view soft tissue within the body. MRI’s can accurately detect tumours and several types of diseases which allow doctors to properly diagnose and treat patients. None of this would have been possible without researching the structure of the atom. By increasing current funds for atomic-structure research scientists could make many more scientific breakthroughs that could benefit society as well as obtain more knowledge of how the universe works based on the atomic makeup.

Despite, funding for atomic-structure research is very expensive. Also, it is fact that atomic-structure cannot see results of funding immediately

MRI, or Magnetic Resonance Imaging is a technique using magnetic waves and radio-waves to investigate the human anatomy and physiology. The usage of the magnetic waves protects patients from other harmful effects present in other forms of scans, such as the ionising radiation in CT scans. The process of how an MRI operates is complicated, and involves many principles of Physics, by using the water molecules within the human body to construct a complex, three-dimensional view of the anatomy . The MRI is far more advanced than many other imaging techniques used for humans. X-Rays, and other scanning devices do not have the same in-depth view accompanying and MRI, and even with the presence of Barium , and other contrast material that increases the quality of the image, the image itself is two-dimensional, and does not have anywhere near the amount of detail observed in an MRI1. Likewise, the CT scan, which can provide imaging in far more detail than an X-Ray, however has the danger associated with using the radiation which has been reported to lead to effects such as cancer or the breakdown of DNA

MRI technology is a useful technique in the medical industry, there are many advantages to its use and for the most part the disadvantages of its use are minimal. They are great because they provide very detailed diagnostic pictures of most of the important organs and tissues in one’s body. They are also capable of showing unique information that other tests are unable to show. They are generally painless. Furthermore, they do not use radiation and are therefore suitable for use in children and pregnant women. Although there are many good attributes to MRI’s, there are still disadvantages to its use. For one, many people are claustrophobic and being in an MRI can become very uncomfortable for them. In addition, the MRI makes a tremendous amount of noise. Often patients are given earplugs or stereo headphones in attempt to muffle the noise.

are all the more rmly pulled in to the core, and the diameter of the ion decreases. So also,