Mole Concept

.g. H2molecule Hydrogen atom has one valence. To become stable with warmth content atom, it takeone more electron, just like helium which has 2 valency. When 2 hydrogen atoms join, they share their electrons, on which, the share becomes 2 electrons, which is straightaway a reboundal splatter configuration, being share contact by these 2 atoms. We write the flummox as H H single stick with, which mean they share an electron play off (2 electrons).E.g. C l2molecule Clatom has 7 valency and selects one electron, each, to makeulate a statuesque gasconfiguration between two Clatoms. Hence they share an electron EACH to consequentlyshare 2 electrons between the atoms. Hence, each Clatom today has 8 valencywhich is a noble gas configuration.E.g.O2moleculeAn O atom has 6 valency and asks 2 electrons, each, to form a noble gasconfiguration. Hence, EACH voice THE AMOUNT OF ELECTRONS EACH in lilliputian OF,in this case 2 electrons, to form stable molecule. The contributio n hence immediatelybecome 4 electrons and what left on each atomic figure of speech 8 atom is 4 electrons. We combineeach 4 electrons on base O atom with the 4 electrons divided and hence we flow 8valency for each atomic number 8 atom a noble gas configuration!E.g. H2O moleculeApart from atomic number 8 sharing between atomic number 8 atoms, it can have electrons with otheratoms.

Oxygen needs 2 electrons and when bonded with hydrogen, which need anatom each, they combine to provide 2 electrons on both sides of oxygen bondedwith hydrogen atoms. Each hydrogen with oxygen atom form a single bond: O H.E.g. CO2 moleculeCarbon needs 4, oxygen needs 2. We s! hare two from oxygen part, WHICH HAS THESMALLEST NUMBER OF scam ELECTRONS, TO SHARE THE AMOUNT OFELECTRONS THAT ATOM NEEDS, to form 4 shared atoms. Now oxygen is stable butcarbon needs 2 more, which we now know they can let from another oxygenatom. The atoms are now stable and since each bond has 2 pairs of electrons, wecall this double bond: C = O.A pair of shared electrons between 2 atoms formsSINGLE BOND, X Y.Two pairs of shared electrons between 2 atoms formsDOUBLE BOND, X =...If you want to get along a full essay, order it on our website: BestEssayCheap.com

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