I need help with questions 1, 2, and 3! You are asked by your instructor to cons

Question

I need help with questions 1, 2, and 3!
You are asked by your instructor to construct a model of the NH_2Cl molecule. Being of a conservative nature, you proceed as directed in the section on Experimental Procedure. First you need to find the number of valence electrons in NH_2Cl_2. For counting purposes with Lewis structures, the number of valence electrons in an atom of a main group element is equal to the last digit in the group number of that element in the Periodic Table. N is in Group _______ H is in Group _______ Cl is in Group In NH_2Cl there is a total of _______ valence electrons. The model consists of balls and sticks. How many holes should be in the ball you select for the N atom? ________ the H atoms? ______ the Cl atom? ______ The electrons in the molecule are paired, and each stick represents a valence electron pair. How many sticks do you need? _________ Assemble a skeleton structure for the molecule, connecting the balls and sticks to make one unit. Use the N atoms three bonds, whereas Cl and H atoms usually form only one. Draw a sketch of form the skeleton below:

Explanation / Answer

Question 1.

NH2Cl2

N = 5; H = 1, Cl = 7

N is bionded to 2 H, and Cl, so there are 2 electrons left

H = bonded to N, no elecetnos left

Chlorine isbonded to nitrgoen, 6 electron left

so

2+0+6 = 8 valence electrons in NH2Cl2 free, therefore, 4 lone pairs free

N = group 5

H = group 1

Cl = group 7

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