The Electro-Negativity of Atoms

The devices used for electronegativity experiments of atomic devices are as follows. * 1-chlorobutane (1 mole) * 1-bromobutane (1 mole) * 1-isobutane (1 mole) * silver nitrate (0.01 mole) * ethanol * water bath (heated to 50 ℃) * test tube × 3 * test tube rack * Nipple pipette × 3 * Burette (1 mm 3) × 2 * Pipette filling method * Set up test tube and test tube rack * Use 3 cm 3 silver nitrate in 3 test tubes Burette * Burette (1 cm 3) Add another ethanol * Place the tube in a water bath (preheat to 50 ° C) for 10 minutes

Alkyl iodide contains an iodine atom and alkyl chloride contains a chlorine atom. The electronegativity of iodine (2.5) is lower than that of chlorine (3.0). Therefore, alkyl iodide is a low polarity compound. Alkyl iodide like alkyl chloride can not be solvated because water is a highly polar solvent, so it is more attractive for chlorine electrons than iodine. As a result, there is no way to enhance the relief of the transition state like alkyl chloride with higher polarity. Therefore, the activation energy of alkyl iodide does not decrease like the activation energy of alkyl chloride. Therefore, its Ea will be higher than 31 kJ / mol

Water molecules are composed of positively charged hydrogen atoms and two negatively charged oxygen atoms. Since a positively charged hydrogen atom attracts two negatively charged oxygen atoms, the atoms of the two elements combine to form a molecule and produce a neutral charge. Due to the extra negatively charged electrons, you scrape combs or balloons hair with negative charge. In the desire to restore stability, the negatively charged atoms of the comb draw the positively charged protons in the water and bend the water. Water is a conductor of electricity, but salt water is even more so

Ice or water molecules are composed of two hydrogen atoms covalently bonded to an oxygen atom. An atom shares electrons and causes oxygen atoms to carry slightly negative charges, whereas hydrogen atoms become slightly positive and become polar molecules. Due to this polarity, water molecules attract each other and form hydrogen bonds between molecules. Hydrogen bonds between hydrogen atoms and oxygen atoms are weaker than covalent bonds and they control the physical properties of water and ice. Water molecules bind more strongly in ice than liquid water, but in ice the molecules separate wider and ice becomes less dense than water.