To answer the questions, interpret the following Lewis structure for XeF4.     1. For the central xenon atom:   ... The number of lone pairs =    The number of single bonds =    The number of double bonds =  2.The central xenon atom _________ Obeys the octet rule  Has an incomplete octet Has an expanded octet

Decide whether the Lewis structure proposed for each molecule is reasonable or not. molecule proposed Lewis structure OF 2 BeH₂ PF4 || :O: H - Be H F - P F W ... :F: :F: Is this a reasonable structure? If not, why not? Yes, it's a reasonable structure. O No, the total number of valence electrons is wrong. The correct number is: No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: O Yes, it's a reasonable structure. No, the total number of valence electrons is wrong. The correct number is: O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: O Yes, it's a reasonable structure. No, the total number of valence electrons is wrong. The correct number is: No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: 0 * If two or more atoms have the wrong number of valence electrons around them, just enter the chemical symbol for the atom as many times as…

To answer the questions, interpret the following Lewis diagram for SO42- .   1. For the central sulfur atom:   ... The number of non-bonding electrons =   The number of bonding electrons =   The total number of electrons = 2. The central sulfur atom fill in the blank 4   ... A. obeys the octet rule.   B. has more than an octet.   C. has less than an octet.

To answer the questions, interpret the following Lewis diagram for NHF2 .     1.  For the central  nitrogen  atom:   ... The number of non-bonding electrons =    The number of bonding electrons =    The total number of electrons =  2.  The central  nitrogen  atom fill in the blank 4   ... A. obeys the octet rule.   B. has more than an octet.   C. has less than an octet.

4. Draw a neat Lewis structure for each of the following compounds. (Note: Both ionic and covalent types have been included.) Make sure your diagram clearly distinguishes the type of bonding. Label your structure as "ionic" or "covalent." If it is covalent, identify the single, double, and triple bonds, if present. a) BeF₂ b) CBr4 c) ASF, d) HCN

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. = | =

Show how these pairs of elements combine into octet-rule molecular compounds, as in the first example. First, draw their atomic Lewis structures, then use any number of these atoms to build an O.R. molecule, with multiple bonds if needed (you may not add a charge to make it O.R. as an ion!). Draw the O.R. Lewis structure, write its formula and chemical name. Atoms O.R. molecule Formula Name Carbon dioxide •¢. and ö. ö=c=ö CO2 H + Se I + S

Decide whether the Lewis structure proposed for each molecule is reasonable or not. proposed Lewis structure Is this a reasonable structure? If not, why not? molecule O Yes, it's a reasonable structure. O No, the total number of valence electrons is wrong. NH, H N=H The correct number is:| No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: LI Yes, it's a reasonable structure. :F: O No, the total number of valence electrons is wrong. BF, The correct number is: :F-B –F: O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: U Yes, it's a reasonable structure. F No, the total number of valence electrons is wrong. The correct number is: IF No, some atoms have the wrong number of electrons around them. .. F: The symbols of the problem atoms are: U * If two or more atoms have the wrong number of valence electrons around them, just enter the chemical symbol for the atom as many times as…