FL Clear F C F LL F Available Electrons: 32 Create the Lewis structure of CF4. NOTE: do only the step asked for in each part and then click Check-don't work ahead to solve the final structure. Step 1. Count valence electrons in the molecule or ion. Do this by adding the periodic group numbers for each atom in the structure and adjusting for charge. Enter and Check. Step 2. Connect each pair of bonded atoms with a single bond by dragging bonds onto the molecule. Each bond decreases the number of available electrons by 2. Check.

Recognising exceptions to the octet rule.

With regard to resonance structures that are drawn for a real species, which of the following statements is NOT TRUE? Select one: A. Resonance structures differ in the location of their electrons, not the positions of their atoms. B. Resonance structures are only drawings; each structure alone does not represent an existing molecule. O C. Resonance structures are real molecules that co-exist in equilibrium with each other. O D. Resonance structures all have electron localized structures, while the real species that is described by them has delocalized electrons.

Decide whether the Lewis structure proposed for each molecule is reasonable or not. molecule proposed Lewis structure BF3 SF 3 CO₂ :F: | -B-F: :F- .. | SIF: S-F: || .. :F: 01010 Is this a reasonable structure? If not, why not? OYes, 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: Yes, it's a reasonable structure. O 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: 0 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: * If two or more atoms have the wrong number of valence electrons around them, just enter the chemical symbol for the atom as many…

Show how these elements combine into octet-rule ionic compounds, as in the first example. First, draw atomic Lewis structures for the atoms and their O.R. ions.  Show their charges, and use them to find the unit formula, and the name.  Then draw atomic Lewis structures for all atoms in the formula unit together, show with arrows how all e¯s are transferred to make the ions, and draw the Lewis structure of the ionic compound. Atoms O.R. ions Unit formula Lewis Structure Name Transfer e¯s with arrows Mg    +   Br       Magnesium bromide   Li    +     C       Lithium carbide   Ge    +    S

I. Directions: Draw the lewis structures of the neutral w atom and the ion of each element. Determine the number of electrons gained or lost in forming an ion. Lewis Structure Number of Electrons Element Neutral lon Gained Lost Atom 1. Potassium 2. Carbon ||

1. Consider the structure shown below and then answer the following questions. a. Complete the structure by adding the missing formal charges. All atoms and lone pairs are explicitly shown. (Hint: Consider the number of bonds neutral atoms have.) :Ö: H ‚H H H b. Draw two more resonance structures of the molecule from part a by adding the missing î bonds, lone pairs, and formal charges. All atoms in both structures should possess an octet. (All atoms and o bonds are drawn for you; remember, only lone pairs and bonds move in resonance structures.) Additional guidelines are given for each structure. All atoms in this structure will be neutral (no formal charges). One oxygen atom has a +1 formal charge and one oxygen atom has a -1 formal charge. H H H H H H H H H

Consider the following Lewis symbols for elements X and Y: X. and. You may want to reference. (Pages 185-188) Section 6.5 while completing this problem. -- -- Q Search Part F What would be the formula of a compound of Y and sulfur if one atom of Y formed a disulfide? Express your answer as a chemical formula. 4 ΑΣΦ 3 DA chemical reaction does not occur for this question. Submit Request Answer Part G Complete previous part(s) Provide Feedback J a ? Review | Constants | Periodic Table Next > 4:49 AM 2/16/2023

Show how these elements combine into octet-rule ionic compounds, as in the first example. First, draw atomic Lewis structures for the atoms and their O.R. ions. Show their charges, and use them to find the unit formula, and the name. Then draw atomic Lewis structures for all atoms in the formula unit together, show with arrows how all e s are transferred to make the ions, and draw the Lewis structure of the ionic compound. Unit formula Atoms O.R. ions Name Transfer e s with arrows Lewis Structure LizN le 1e 30 Lithium Li. + •N• Li. •N• Li. Li 30 Li Li Li :N: nitride )le Li. Pb and K and H

Show how these elements combine into octet-rule ionic compounds, as in the first example. First, draw atomic Lewis structures for the atoms and their O.R. ions. Show their charges, and use them to find the unit formula, and the name. Then draw atomic Lewis structures for all atoms in the formula unit together, show with arrows how all e s are transferred to make the ions, and draw the Lewis structure of the ionic compound. Unit formula Atoms O.R. ions Name Transfer e s with arrows Lewis Structure LizN le 1е 30 Li. + •N. Lithium nitride Li. N: Li. 30 Li :N Li Li Li :N: Li. Jle Mg + Br Li + C Ge +