Determine whether the following hypothetical compounds are polar or nonpolar. Briefly explain how you can tell. a. A compound with a tetrahedral molecular geometry in which all four bonds are to four atoms of the same element. b. A compound with a tetrahedral molecular geometry in which two of the bonds are polar bonds to two fluorine atoms and two of the bonds are nonpolar bonds to two hydrogen atoms. c. A trigonal pyramidal compound that contains one polar bond.

1. Draw the best Lewis dot structure for the anion CCI in the correct molecular geometry [Include formal charges and lone pair electrons, and use dashed and solid wedge bonds if necessary 2. How many electron groups are present around the central atom and what is the electron group geometry? 3. What is the molecular geometry and ideal bond angles? 4. Is the molecule polar or nonpolar? If it is polar, draw a dipole moment arrow next to your structure to indicate the directionality of the dipole moment. Answers Edit View Insert Format Tools Table 12ptv Paragaph BIVA 2 Owordh AG3454jpg IMG 3450jpg

Which of the following bonds is least polar? Use the periodic table only. B-C b. C-F C-O a. C.

Which of the following best describes electronegativity trends in the periodic table?I.   Electronegativity inreases from right to left across a period.II.  Electronegativity inreases from left to right across a period.III. Electronegativity inreases from bottom to top within a group.IV. Electronegativity inreases from top to bottom within a group. Select one: a. I and III b. I and IV c. II and III d. II and IV e. None of these.

Lewis Structures Lewis Structures are used to describe the covalent bonding in molecules land ions. Draw a Lewis structure for CH4 and answer the following questions based on your drawing. 1. For the central carbon atom: The number of lone pairs The number of single bonds The number of double bonds= 2. The central carbon atom î A. Obeys the octet rule B. Has an incomplete octet. C. Has an expanded octet. = | =

Please answer number 4 a B C D

Which statement A-D about VSEPR theory is not correct? Select one: a. The molecular shape or geometry can differ from the electron-pair geometry. b. In VSEPR theory, the shape or geometry of a molecule is determined by electron-electron repulsion. c. The steric number of a central atom is the sum of the number of bonded atoms and lone pairs around the central atom. d. The steric number has five values from 2 to 6. e. Statements A-D are all correct. Clear my choice

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