Quiz 2E

Question 12 Which of the following species have tetrahedral bond angles? NH3 CH3 *CH: BF 3 H20 E F

How many σ-bonds are in the molecule?    σ-bonds How many π-bonds are in the molecule?    π-bonds For bond angles, respond with 60o, 90o, 109o, 120o, or 180o (do not include the degree sign in your response). What is the approximate H-C-C bond angle in the molecule?  o What is the approximate C-O-H bond angle in the molecule?  o What is the approximate C-N-H bond angle in the molecule?  o What is the approximate O=C-O bond angle in the molecule?  o

Draw the Lewis structure for CF,0 and determine the shape around the carbon atom. Part: 0/2 Part 1 of 2 Draw the Lewis structure for CF,0. Part: 1/2 Part 2 of 2 tetrahedral What is the shape around the central carbon atom? Select the angle best answer Sent togonal planar 13 trigonal pyramical F linear 10²- L 5

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Which of the following best describes the bond angle of the polyatomic anion NO2- ? Group of answer choices Exactly 180° Slightly less than 109.5° Slightly less than 120° Exactly 120° Exactly 120°

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Please answer for the lCl2

XeF2 XeF ₄  C2H3F C2H2

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QUESTION 4 Give the molecular geometry and number of electron groups for BrF5. square planar, 6 electron groups T-shaped, 5 electron groups seesaw, 5 electron groups octahedral, 6 electron groups O square pyramidal, 6 electron groups QUESTION 5 Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the in each molecule. CS₂ CF4 O CS2 > CF4> SC12 CF4 > SC12 > CS2 CF4> CS2 > SC1₂ ⒸCS₂ = SC12 > CF4 SC12 > CF4 > CS₂ QUESTION 6 How many of the following molecules are polar? KrBr2 SC³6 OCCl2 PBr5 2 00000 0 01 SC1₂

Subject- Chemistry

QUESTION 4 Determine which compound should have a(n) trigonal pyramidal molecular geometry. Key Concept: Lewis structures are drawn from a knowledge of the total number of electrons from all the atoms involved in the structure. The element with the lowest electronegativity is the central atom. Fulfill octet of outside atoms first. Molecular shape depends upon the number of atoms and lone pair electrons around the central atom.   A BrCl3   B IF4+   C BCl3   D NCl3

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v Question Completion Status: QUESTION 2 What is the formal charge on nitrogen in the following structure? H. H-C H. H C=N O 2- QUESTION 3 What is the electronic configuration for the magnesium ion O 1s2 2s2 2p63s2 O 1s2 2s2 2p6 O 1s2 2s22p4

write the formula of each chemical, then  draw lewis structure and structural diagram with approximate Bond angle

Use the molecular model kit to construct the following models, and then fill in the boxes for each molecule. When possible. show a resonance Lewis structure. Use formal charge, when possible to select the best structure. Follow example for CH4 below. Formula #VES CH4 8 NH3 H₂O CO₂ Lewis Structure H H-C-H H Resonance? (Y/N) Show N Electron Group & Bond Angle Tetrahedral 109° Molecular Polar? Geometry (Y/N) tetrahedral N VSPER Sketch H H 1 109.5° H H Hybridization sp³

Which is the correct molecular geometry of the water (H2O) molecule?   Group of answer choices Trigonal pyramid Linear Bent Trigonal planar