Topic+5a

Topic 5a: Rawlins H

Covalent bonds: a bond in which one or more pairs of electrons are shared by two atoms. Ionic bonds: a bond in which one or more electrons from one atom are removed and attached to another atom, resulting in positive and negative ions which attract eachother Polar covalent bonds: bonds in which the sharing of the electron pair is unequal, wkth electrons spending more time around the more nometallic atom. The charge of one atom is slightly more positive and the other is more negative.

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Jeff M An ionic bond can be thought of as two magnets. Its an all or nothing type bond. They are either together or not [] A covalent bond could be thought of as maybe a rubber band. The bond can stretch and bend, but if you pull hard enough it will break []

Alisha R Emily R.  1. Determine the bond type for bond AB. Show all work and/or explain your answer. It polar covalent, the reason it is because its 1.0,and it doesnt have a melting point, also it is not conductive. Polar covalent bonds rarely conduct electro acitivity or conductive activity, it usually does not have a melting point. Therefore it is a polar convalent.  2. Determine the bond type for bond CD. Show all work and/or explain your answer. Ionic bond, the reasons is because its electronegativity is higher, the temperature is higher than covalent bonds and the conductiivity is very poor. Inonic bond have a higher melting point and electronegativity level.Therefore it is an ionic bond.  3. Determine the bond type for bond BD. Show all work and/or explain your answer. Non polar convalent, The reason is because has no electronegativity, but it melting points is higher, because the temperature is high the conductivity is high as well. Therefore the bond is non polar convalent.  4. Determine the bond type for bond DD. Show all work and/or explain your answer. Covalent, the reason is because it doesn't have any electronegativity, it has a lower melting point than non polar convalent, becuase of a low temperature there is no conductivity. Therefore the bond type is covalent.
 * ** Element ** || ** Electronegativity ** || || ** Bond ** || ** Melting Point ** || ** Conductivity ** ||
 * ** A ** || 1.0 || || ** A-B ** || NA || NA ||
 * ** B ** || 2.5 || || ** C-D ** || -76 ℃  || Poor ||
 * ** C ** || NA || || ** B-D ** || 3373 ℃  || Excellent ||
 * ** D ** || NA || || ** D-D ** || -270 ℃  || NA ||