Question

Name Section Experiment 13 Advance Study Assignment: The Geometrical Structure Molecules You are asked by your instructor t nature. you proceed as directed in the section onE. NHCI molecule. Being of a conservative Procedure. 1. First you need to find the number of valence electrons in NH CI. For counting purposes with Lewis struc- e er of valence electrons in an atom of a mam pgToup clement is equal to the last digit in the 1 element in the Periodic Table. Nis in Group His in Group Cl is in Group In NH-CI there is a total of valence electrnuns 2. The model consists of balls and sticks How many holes should in the ball you select for t :N atom? h How many holes should in the ball vou select H atoms? r t How many holes should be in the ball vou select Cl atom? The electrons in the molecule are paired, and each stick represents a valence electron pair. d. How many sticks do you need? 3. Assemblea skeleton structure for the molecule, connecting the balls and sticks to make Use the rule that N atoms form three bonds, whereas Cl and H atoms usually form only one. Drawa sketch of the skeleton below 4. a How many sticks did you need to make the skeleton structure? h How many sticks are left over? fcontinued on following page) 98 Experiment 13 The Geometncal Structure of Motecules-An Experiment Using Molecular Models f your model is to obey the octet rule, cach ball must have four sticks in it (except for hydrogen atom balls, which need and can only have one), (Each atom in an octet rule species is surounded by four pairs of clectrons.) How many holes remain to be filled? Fill them with the remaining sticks, which Lewis structure for NH-CI using lines for bonds and pairs of dots for nonbonuding electrons. . Draw nonbonding electron complete 5. Describe the geometry of the model, which is that of NH CI. Is the NH.Cl molecule Why? polar? Explain your reasoning. Would you espect NH.CI to have any isomeric forms? If so, draw them below. 6. Would NH CI have any resonance structures?

Answer 1

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fa NHclA 3 Skeleton st nuctune Lewis Stouctue teast centoal atem electionegative cl H electrons 4 Skeleton Stauctene sticks 4) The required fo マ sticks 2d) there discuessed As in we thismolecunle Stequined 3 sticks Fa skeleton stauctune we 3 . Onsuwen shown in above diagnam fa left わVeへ, b) How many sticks Total sticks stuetuau Sticks stequind fa skeleton -3 Sticks lett ove