Electron example sentences

As you have learnt earlier, the atomic number of hydrogen is Hence hydrogen has one electron in its K shell and it requires one more electron to fill the K shell.Advertising is one of the most important methods of promoting the sale of products, particularly, consumers goods like electronic goods, automobiles, soaps, detergents etc.However, electrons were not known at the time when the phenomenon of electricity was first observed.Two sp hybridised orbitals of carbon atom overlap with two p orbitals of oxygen atoms to make two sigma bonds while other two electrons of carbon atom are involved in p?– p? bonding with oxygen atom.In general, non-metals have higher ionisation enthalpies and higher electronegativities than the metals.In the case of carbon, it has four electrons in its outermost shell and needs to gain or lose four electrons to attain noble gas configureuration.When we move from lithium to fluorine across the second period, successive electrons are added to orbitals in the same principal quantum level and the shielding of the nuclear charge by the inner core of electrons does not increase very much to compensate for the increased attraction of the electron to the nucleus.The size of an anion will be larger than that of the parent atom because the addition of one or more electrons would result in increased repulsion among the electrons and a decrease in effective nuclear charge.This arises because in the nitrogen atom, three 2p-electrons reside in different atomic orbitals (Hund s rule) whereas in the oxygen atom, two of the four 2p-electrons must occupy the same 2p-orbital resulting in an increased electron-electron repulsion.As a result, the valence electron experiences a net positive charge which is less than the actual charge of + In general, shielding is effective when the orbitals in the inner shells are completely filled.On the other hand, compounds formed between non-metals themselves are largely covalent in character because of small differences in their electronegativities.Elements having similar outer electronic configureurations in their atoms are arranged in vertical columns, referred to as groups or families.In other words, the ionization enthalpy of the extreme left element in a period is the least and the electron gain enthalpy of the element on the extreme right is the highest negative (note : noble gases having completely filled shells have rather positive electron gain enthalpy values).In this case, increase in shielding outweighs the increasing nuclear charge and the removal of the outermost electron requires less energy down a group.Therefore, alkenes are easily attacked by reagents or compounds which are in search of electrons.