Oval example sentences

It is very difficult to break extended covalent bonding and, therefore, diamond is a hardest substance on the earth.Before contesting elections, a candidate needs the approval of the Chinese Communist Party.Removal of useful components from the soil and addition of other substances, which adversely affect the fertility of the soil and kill the diversity of organisms that live in it, is called soil pollution.In this case, increase in shielding outweighs the increasing nuclear charge and the removal of the outermost electron requires less energy down a group.Since the sum of the first four ionization enthalpies is very high, compounds in +4 oxidation state are generally covalent in nature.The tri-chlorides, bromides and iodides of all these elements being covalent in nature are hydrolysed in water.We have seen the formation of covalent bonds by the sharing of electrons in various elements and compounds.Comparing, the ionization of hydrochloric acid with that of acetic acid in water we find that though both of them are polar covalent molecules, former is completely ionized into its constituent ions, while the latter is only partially ionized (< 5%).The removal of an electron from an atom results in the formation of a cation, whereas gain of an electron leads to an anion.Malpighian tubules help in the removal of nitrogenous wastes and osmoregulation.Also, of all the measures an individual can take to improve health, exercise is the lifestyle change with the widest popular approval.Thus, all activities involving the removal of hindrances in the process of exchange are included in commerce.This prevents it to form +3 ions and forces it to form only covalent compounds.The example of Zimbabwe shows that popular approval of the rulers is necessary in a democracy, but it is not sufficient.The fixation of six molecules of CO2 and 6 turns of the cycle are required for the removal of one molecule of glucose from the pathway.