Chemistry

Chapter 8, 9 #8) a) Atoms go forth construct lose or handle electrons to fulfill the ne atomic number 18st portentous- ordnance electron configuration. Except for H and He. Electrons in the valence epidermis is called octet rule. b) Sulfur subdivision has 6 valence electrons, it must grow 2 electrons to accomplish an octet rule. c) nitrogen has 5 valence electrons, so it should gain 3 more(prenominal) than(prenominal) to achieve on octet. #12) a) #18)a) Zn2+ = [Ar] 3d10b) [Xe] noble gas configuration c) [Ar] noble gas configurationd)[Kr] 4d6 e) [Xe] 4f14 5d106s2 f)[Xe] 4f14 5d106s2 #28) MgCl2 2326 kj, SrCl2 2127 kj, CaCl2 allow for be in the rage 2200-2250 b) ?H latt 795.8 kj + 179.3 kj +2(121.7 kj) + 590 kj= 2256 kj #32) #42) a) Br is more disconfirming and it has stronger attraction for the shared electrons and go out have partial oppose charge. B)Q= Mr=1.21 D2.49 A * 1 A1*10-9 m * 3.34*10^-301 D * 1 e1.60*10-19 C = 0.101 e so the charges are 0.101 e #48) a) b) Oxidation routine for F is -1, and for P is +3 c) P has 0 formal charge, F has 0 formal charge. d) No its not the same, P has oxidation number + 3 and formal charge 0 #52) to a greater extent than one Lewis structure is drown, that is why resonance structure are needed to be more accurate.

C) CO2 is common #62) a) b) c) D) e) #66) ?H = 3D(CH ) + D( ClCl) D(CCl) D( HCl) = 413 + 242 -328 -431 =-104 kj b) ) ?H= 2( 259) + 2(366) -2(339)-2(276) = 20 kj c) ) ?H= 163 +242 -2(200) = 5 kj #72) i) ?H= 2(155) -4(485) = - 1630 kj ii) ) ?H= 1072 +3(155) -4(485) -2( 190) = -780 kj iii) ) ?H= 29 799) + 4( 155) -4( 475) -4( 190) = -482 kj (i) is the most exothermic b) the more oxygen bond to decimal point centigrade the less exothermic will be Chapter 9 #16) a) 3 symmetrical carpenters planeb) 4 tetrahedral c) 5 trigonal bipyramidal d) 6 octahedral #22) electron theatre tetrahedral. molecular geometry trigonal pyramidal b) Electron domain- trigonal planer, molecular geometry...If you insufficiency to study a full essay, shape it on our website: Ordercustompaper.com

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