aw the Lewis structure for ZX3. Where element Z has 6 valence electrons and element X has 8 valence electrons. Undo

Draw Lewis structures for the following molecules or polyatomic ions. a. SO3 b. SO32

Successive substitution of F atoms for H atoms in the molecule NH3 produces the molecules NH2F, NHF2, and NF3. a. Draw Lewis structures for each of the four molecules. b. Using VSEPR theory, predict the geometry of each of the four molecules. c. Specify the polarity (polar or nonpolar) for each of the four molecules.

Bond Enthalpy When atoms of the hypothetical element X are placed together, they rapidly undergo reaction to form the X2 molecule: X(g)+X(g)X2(g) a Would you predict that this reaction is exothermic or endothermic? Explain. b Is the bond enthalpy of X2 a positive or a negative quantity? Why? c Suppose H for the reaction is 500 kJ/mol. Estimate the bond enthalpy of the X2 molecule. d Another hypothetical molecular compound, Y2(g), has a bond enthalpy of 750 kJ/mol, and the molecular compound XY(g) has a bond enthalpy of 1500 kJ/mol. Using bond enthalpy information, calculate H for the following reaction. X2(g)+Y2(g)2XY(g) e Given the following information, as well as the information previously presented, predict whether or not the hypothetical ionic compound AX is likely to form. In this compound, A forms the A+ cation, and X forms the X anion. Be sure to justify your answer. Reaction: A(g)+12X2(g)AX(s)The first ionization energy of A(g) is 400 kJ/mol. The electron affinity of X(g) is 525 kJ/mol. The lattice energy of AX(s) is 100 kJ/mol. f If you predicted that no ionic compound would form from the reaction in Part e, what minimum amount of AX(s) lattice energy might lead to compound formation?

Draw Lewis structures showing all valence electrons for these molecules. (a) C2H6 (b) CS2 (c) HCN

For the structure CIO3 draw a Lewis structure using Cl as the central atom... For the structure that obeys the octet rule which of the following are correct? There are a total of 26 valence electrons There are a total of 24 valence electrons There are a total of 25 valence electrons OCI has one lone pair of electrons CI makes a double bond to one of the oxygens Each O has a -1 formal charge 20 atoms make a double bond to Cl All 30 atoms make a double bond to Cl

Draw one BEST Lewis structure for the generic molecule XY4Z. Don't worry about resonance structures. Include all formal charges. Element X is the least electronegative. EN values: X = 3.0, Y = 3.5, Z = 4.0. For neutral atoms, element X has 8 valence electrons and element Y has 7, and Z has 6.  The highest occupied principal energy level of the central atom is greater than 2.   Is the measured/approximate bond angle(s) equal to, less than, or greater than the angle predicted by VSEPR theory? Briefly explain why (in ~1 sentence). Draw the best wedge-dash structure and add dipole moments (if applicable). If there is a net dipole moment, draw it. If not, write “nonpolar."

2. Avogadro does not "waste" his time drawing a Lewis structure before determining the shape of PF3. He thinks that the shape of PF3 must be trigonal planar because there are three fluorine atoms bonded to the central phosphorus atom. a. Draw the Lewis structure for PF3. b. Was Avogadro's answer for the shape of a PF3 molecule correct? Explain c. Why is it important to draw the Lewis structure for a molecule before identifying the shape of the molecule? 3. Draw the Lewis structure of ozone, O3. Describe why ozone has a bent shape instead of a linear shape.

What possible error(s) exist in the Lewis structure (assume we are trying to represent the best possible Lewis structure for the NO₂S ion knowing N is the central atom in this polyatomic ion)? [:ö==S: N= CO :O: The best structure would have double bond and two lone pairs on each oxygen atom and a single bond with three lone pairs on the sulfur. There are no errors. This is the best possible structure. The Lewis structure above does not minimize formal charges, thus is the not the best possible structure. The nitrogen atom has an expanded octet, and this structure is impossible. The Lewis structure contains the wrong number of electrons, thus this structure is impossible.

10.) The structural formula of a certain aldehyde (related to formaldehyde) is H3C-CH2-CHO.  Draw a Lewis structure for this aldehyde and determine the number of bonds present.  Note that a single or a double or a triple bond counts as one bond. Write the number, not the word.