Which statement is true given the following Lewis structures? *Picture attached* Answer Options: A.) Structure III is a valid structure for SeH2 because H needs a duet of electrons. B.) Structure II is an invalid structure for BeCl2 because Be has only 4 valence electrons as drawn. C.) Structure I is a valid structure for ClF3 because nonmetals can expand their octet. D.) Structure IV is a valid structure for AsO43- and its 34 valence electrons.

Can you help me with the CCl4 step-by-step for number (Step 6)? I need help with the central atom surrounded by an identical electron group. I need help with the molecule polar.

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.

Two possible Lewis drawings for SCN are shown below, labelled structure A and structure B. Calculate the formal charges and select the Lewis drawing that best represents SCN'. Structure A Structure B A) Structure A [s-c=N:] [š=c= š=c=N!]¯ B) Structure B

4. Ortho-Dichlorobenzene, C6H4Cl2, is obtained when two of the adjacent hydrogen atoms in benzene are replaced with Cl atoms. A skeleton of the molecule is shown here. a. Complete a Lewis structure for the molecule using bonds and electron pairs as needed. b. Are there any resonance structures for the molecule? If so, sketch them. c. Are the resonance structures in (a) and (b) equivalent to one another as they are in benzene? H H-C H C-H

Draw the Lewis structure of BeF₂ and then determine the ideal bonding angle(s) of the central atom.

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…

Please answer all parts

Consider a group 4A (or group 14) element A and a group 6A (or group 16) element D.  How many bonding and nonbonding pairs (lone pairs) of electrons best describe the Lewis structure of AD2? (Note: do not consider expanded octets)   Answer Options: A.) Bonding pairs: 2 Nonbonding pairs: 4 B.) Bonding pairs: 4 Nonbonding pairs: 4 C.) Bonding pairs: 4 Nonbonding pairs: 8 D.) Bonding pairs: 4 Nonbonding pairs: 9

Draw the Lewis structure for SeCI2 (selenium dichloride), then answer all of the following questions. For those questions in which a numerical response is required, express your answer with an integer (0, 1, 2, 3 etc.).   a) Provide the symbol for the central element. This answer is case-sensitive. b) How many lone pair of electrons are surrounding the central element? c) How many lone pair of electrons in total are present in this molecule? d) How many non-bonding electrons are there in total in this molecule? e) How many electrons are being shared in total? f) How many single bonds are present in this molecule? g) How many double bonds are present in this molecule? h) How many triple bonds are present in this molecule?