Question

CHEMICAL BO NDING and PROPERTIES of COMPOUNDs Use theory portion of this lab, and information from chapters 4 and 5 to to mplete this PreLab Fill in the blanks: MOLNCULARSA 1. a. The measure of an atom's attraction for the electrons in a bond is its uEne m trvs ewperivne bonding involves a transfer of electrons between two atoms c. Sharing of electrons in a bond between two atoms is... bondig d. A pure covalent or non-polar covalent bond exists when electrons are... isycussion. The wree sed to predio the onding electron rvent themselv w same etfe spazial shared by two atoms. In these bonds, the electronegativity difference between the two atoms is covalent bond results from the unequal sharing of electrons twra between two atoms. if the electronegativity difference between two atoms is less than 1.9, the bond would be considered to be a f. bond ve electrorn compounds dissolved in water exhibit high electrical conductance. h. Polar compounds result because the differences in electronegativity between atoms allow the less electronegative atoms to carry a parti al.. charge while more electronegative atoms may carry a partial!.chrge

Answer 1

a) The measure of an atom's attraction for electrons in a bond is its Electronegativity, b) lonic bonding involves a transfer of electrons between two atom:s c) Sharing of electrons in a bond between two atoms is Covalent bonding d) A pure covalent or non-polar covalent bond exists when electrons are equally shared by two atoms. In these bonds, the electronegativity difference betweentwo atoms is 0-0.4 e) A polar covalent bond results from the unequal sharing of electrons between two atoms f) If the electronegativity difference between two atoms is less than 1.9, the bond would be considered to be a polar covalent bond. g) lonic compounds dissolved in water exhibit high electrical conductance h) Polar compounds result because the differences in electronegativity between atoms allow the less electronegative atoms to carry a partial positive charge while more electronegative atoms may carry a partial negative charge. 2. a) C & C: non-polar covalent bond (EN difference-0) K & F: ionic bond (EN difference 4.0-0.8 3.2, more than 1.9) Cl & Cl: non-polar covalent bond (EN difference-0) C & N: polar covalent bond (EN difference 3.0-2.5 0.5) Ca & Cl: ionic bond (EN difference 3-1-2) N & O polar covalent bond. (EN difference-3.5-3.0-0.5) 3. Metals have less electronegativity and Non-metals have more electronegativity The bonding most prevalent between a metal atoms and a non-metal atom will be lonic and the bonding betweentwo non metal atoms will be a covalent bonding