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chem5back - 3 The fullninate species[CNO]‘\plays an...

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Unformatted text preview: 3. The fullninate species [CNO]‘\plays an important role in the historical deveioprnent of the chemi- cal sciences, as it wasmroughout the 19th and early 20th centuries in the form of Hg(CNO)2, _ a covalently bonded compound which reacts explosively to shocks (and was therefore-"essential as the detonator in Alfred Nobel’s formulation of dynamite). Draw its Lewis structure, and suggest which end of the fulminate points toward the positively charge Hg2+ cation. (You might expect some unusual formal charges; unstable species are often unstable precisely because the electrons are distributed in peculiar ways.) ””3 *3 1r} ( 43W, Efgfif e we oi cl {)0 3 Ni“ FC' 1(Z>-)v"3 .. a". x 2+, 4. The dipole moment it. of HCl is found to be 1.0 D, representing a charge separation (3 of about 0.17 of an electron charge; the excess positive charge at the H nucleus, the excess electron charge at the Cl nucleus. (4.8 D represents a unit charge separated by one A). The dipole moment in HBr is 0.8 D. What fraction of a positive charge is found at the H nucleus in HBr? WM i , , q-lo'g" VWD -20 (f " OiP33 Ci : MN; MO ‘tl HIM «[0 [n .89 HOW, - , .. I M '" O. /7_ e" /2 A fwd“: ch"? “(4} [sum . C“ N: 0: TM Cwisem emoLis wort: N-SC'JNQ ...
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