Electronegativity

Latent fingermark being imperceptible to the unaided eye is the decisive form of physical evidence found on divergent surfaces at the scene of crime. It is decisive because of its perpetuality and uniqueness. The word ‘fingerprint’ is common in commonality but individual to a person. When a person grasp something, he left the traces of residues (secretions of glands) conforming impression of the ridges of the fingers. The fingermark residue is a complex matrix of secretions and xeno-materials.…

could be a preventive for colds. Needless to say, Pauling had made many accomplishments in his lifetime, now it is time to bring these to light. Mr. Pauling’s strides in chemical bonding changed chemistry forever. Not only did he develop an electronegativity scale to assign to atoms involved…

The most common periodic trends include electronegativity, atomic radius and ionization energy. In order to find the trend for electronegativity on the periodic table you have to start from left to right then from top to bottom.(Luarel, 2008) Electronegativity increases as you go across the periodic table and as you go down they increases. This is because its ability to attract electron becomes greater…

and has 5 shells. Iodine is solid nonmetal at STP and it's electron configuration on shorthand in [Kr]4d105s25p5. Iodine has 53 protons and electrons and 74 neutrons. It has an atomic mass of 126.904 amu and I127 is a common isotope. It's electronegativity is 2.7 which means it has a decent ability to get electrons to be like a noble gas. It's melting point is 387(K) which is Kelvin and it's boiling point is 457(K) (both at STP). Iodine's first IOnization energy is 1008. (kj/mol) and it's…

Fluorine is the world's thirteenth most bounteous component and constitutes 0.08% of the Earth's outer layer. It has the most electronegativity of all components. Fluoride is broadly conveyed in the earth. In January of 1945, Grand Rapids in the United States, fluoridated the water in the community to a level of 1 ppm as a dental caries aversion measure. Nonetheless, water fluoridation remains a disputable general wellbeing measure. The article reviews the importance of Fluoride and the effects…

guanine are complementary to each other. Adenine and thymine are complementary as well. This is because cytosine and thymine are pyrimidines (they have one ring)and adenine and guanine are purines (they have two rings). It is also because of the electronegativity of oxygen and nitrogen, as well as the partial positivity of hydrogen. The oxygen and nitrogens in guanine attract the hydrogens in cytosine, and vice versa, to create three hydrogen bonds. The same with adenine and thymine, except only…

because of the random motions of electrons. Dipole-dipole forces is when a molecule has a permanent partial charge on its poles because of an atom covalently bonding to another atom with a different electronegativity, causing electrons to spend more time in one area than the atom with the lower electronegativity. These are stronger than dispersion forces because of the permanent dipoles. There is also asymmetry in the molecule that makes the molecule polar. Hydrogen bonding is an extreme form of…

The goal of this laboratory project was to identify the unknown compound and thoroughly investigate it to find its physical and chemical properties which reveal the way it might behave. This was done by performing many anion, cation, solubility, and pH tests to help us to determine the identity of our compound. The list of salts in the lab manual made it possible to narrow down the possibilities of our unknown compound. After identifying the compound, the goal was to synthesize the unknown…

reverse reaction, the hydroxide ion is the base and the hydronium ion is an acid. Conclusion Overall, all of these extraordinary properties comes from the unusual chemical structure and bonding of the water molecule. The big difference in electronegativity between the oxygen and hydrogen atoms in every water molecule led to the formation of hydrogen bonds between the water molecules. Water as being polar due to its uneven distribution of electrons meant that it could easily dissolve other…

Introduction The goal of this experiment was to determine atomic weight of Kandimonium and the relative number of M&M’s in Kandimonium. Kandimonim is composed of three isotopes: Skittles, M&M’s, and Sweet Tarts, and the ratio of Sweet Tarts to Skittles is 27:18. The relative number of M&M’s and the atomic mass were determined by weighing each of the different Isotopes and calculating their average masses for further calculations. Calculations The following calculations were used to…