ASK YOUR TEACHER   Choose the selection which gives the correct number of  and  bonds present in one molecule or ion of phosphate ion, PO43-. Make the central atom in your Lewis structure follow the octet rule if possible. a) There are 0  bonds and 4  bonds in one molecule or ion of this substance. b) There are 3  bonds and 1  bonds in one molecule or ion of this substance. c) There are 4  bonds and 1  bonds in one molecule or ion of this substance. d) There are 4  bonds and 4  bonds in one molecule or ion of this substance.

Identify Element A Identify Element B Identify the compund formula Using electronegativities, show which type of bond is present. Is the molecule polar, yes or no? What 3D shape does this molecule have? What are the bond angles in this shape?

Dispersion forces are produced when an electronegative atom pulls on the electron of a hydrogen atom so much that the proton of the hydrogen can closely interact with the electronegative atom of another molecule electronegative atoms pull electrons toward one area of the molecule, creating regions of partial positive and partial negative charge that are attracted to regions of other molecules with the opposite charge electrons are transferred from one atom to another to produce anions and cations that are then held together in a rigid lattice electrons in molecular compounds are constantly moving and produce short-term regions of positive and negative charge that are attracted to regions of other molecules with the opposite charge

Write the Lewis structure for each molecule/ion. NO2-

Answer the questions in the table below about the shape of the phosphorus tetrafluoride (PF ) anion. How many electron groups are around the central phosphorus atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central phosphorus atom? (You may need to use the scrollbar to see all the choices.) v (choose one) linear bent T-shaped trigonal planar trigonal pyramidal square planar square pyramidal tetrahedral sawhorse trigonal bipyramidal octahedral O

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.

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Part 1) If 3.36 moles of N2 and 3.90 moles of H2 are combined under, which would be considered the limiting reactant? Part 2) How many grams of NH will be formed during the reaction? Part 3) In sufficient detail, describe the most valid Lewis structure of NH3 (types of bonds, presence of unbonded electrons, existence of any formal charges etc.), then specify its molecular geometry. Based on the reaction to form ammonia (NH3

1. Considering ionic compounds, a) What type of elements tend to form cations and why? b) What type of elements tend to form anions and why? c) What is the formula for aluminum oxide? Describe or show what happened to the valence electrons of each atom to make the compound. 2. Considering molecules and covalent bonding, a) Draw the Lewis structure of SO2 that obeys the octet rule. (Draw this out on paper, take a photo, and embed this image into the document you will submit). b) Label on your structure which electrons are bonding and which are nonbonding. c) What is the molecular shape of this molecule? d) Look up the electronegativities of these two elements in Figure 4.5 of the text. Would you expect this molecule to be polar or nonpolar? Why? 3. What is molecular recognition, how is it used to create medicines and materials, and why is it advantageous to use this in the manufacturing new drugs and medicines? 4. Carbon dioxide in the atmosphere has been a topic in the news lately as…

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