Oval example sentences

When two hydrogen atoms in benzene are replaced by two similar or different monovalent atoms or groups, three different position isomers are possible.In order to achieve noble gas configureuration, carbon shares these electrons with four atoms of hydrogen as shown in Figureure Such bonds which are formed by the sharing of an electron pair between two atoms are known as covalent bonds.abolishing licensing requirement in most of the industries except a short list, freedom in deciding the scale of business activities i.e., no restrictions on expansion or contraction of business activities, removal of restrictions on the movement of goods and services, freedom in fixing the prices of goods services, reduction in tax rates and lifting of unnecessary controls over the economy, simplifying procedures for imports and experts, and making it easier to attract foreign capital and technology to India.Silicon dioxide is a covalent, three-dimensional network solid in which each silicon atom is covalently bonded in a tetrahedral manner to four oxygen atoms.Using these d-orbitals the third period elements can expand their covalence above four.Recall the question we ask so often: “What will people ('then') say?” Following the norm is, thus, the simplest way of avoiding disapproval and obtaining approval from others.Although carbon cannot exceed its covalence more than 4, other elements of the group can do so.Therefore, it is easier to remove the 2p-electron from boron compared to the removal of a 2s- electron from beryllium.The best time for the removal of weeds is before they produce flowers and seeds.The bond dissociation enthalpy is the change in enthalpy when one mole of covalent bonds of a gaseous covalent compound is broken to form products in the gas phase.The removal of an electron from an atom results in the formation of a cation, whereas gain of an electron leads to an anion.Similarly, we can say that removal of a product also boosts the forward reaction and increases the concentration of the products and this has great commercial application in cases of reactions, where the product is a gas or a volatile substance.Weed control methods also include mechanical removal.Since the sum of the first four ionization enthalpies is very high, compounds in +4 oxidation state are generally covalent in nature.You can construct a large number of models of such molecules of both types (open chain and close chain) keeping in mind that carbon is tetravalent and hydrogen is monovalent.