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- The model consists of balls and sticks. a. How many holes should be in the ball you select for the N atom? ___________ b. How many holes should be in the ball you select for the H atoms? ____________ c. How many holes should be in the ball you select for the Cl atom? ____________ The electrons in the molecule are paired, and each stick represents a valence electron pair. d. How many sticks do you need? ____________Solutions For an ionic solid to dissolve into a liquid, the ions must dissociate and become surrounded by solvent molecules. An example of a water-soluble ionic solid is table salt, NaCl. Salt-water can be written as NaCl(aq) indicating "aqueous." see the figure. (Figure 1) In contrast, an example of a water-insoluble ionic substance is zinc sulfide. Zinc sulfide does not dissociate in water, and therefore the ions cannot become hydrated. Its formula is written ZnS(s) where the s stands for "solid." See the figure. (Figure 2) lonic compounds are not the only substances that can dissolve in liquids. Molecular compounds can also dissolve if the individual molecules can become solvated. Figure 1 of 2Decide v...ier these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. H No, it has the wrong number of valence electrons. The correct number is:| Н — N— Н No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. :0: No, it has the wrong number of valence electrons. The correct number is: || .. : C1 — С — CI: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. + The correct number is: O Н — Н — О — Н No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are: * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,0".
- 3. The following Lewis structures are incorrect due to the missing charge. Add charge to the proper atom of the Lewis structures below. .. a) .0 11 .C. H. b) c) H-N-O-H H-C=N-H エ-N-H 工 エ5. Fill in the empty boxes with the correct information. 6. 1st Element Ag # of atoms 1 b. Ionic bond: 2nd Element c. Polyatomic Ion NO₂ # of atoms Give three chemical formulas and corresponding names for each bonding pattern: a. Covalent bond: 81 Formula C8H10 Name Ammonium phosphate Molybdenum (II) acetate Potassium tellurate=16834872&OpenVellumHMAC=765a9e0c4c56ffa4c558304d6cf2... Q ☆ eedback 30 of 33 Review I Constants I Periodic Table the Part A CH3-CH2–NH, + H2O = Draw the molecules on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars, including charges where needed. The single bond is active by default. ®, H: con H. H2 C.
- Part A + H,0 H, Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), O O, ® H CONT C CI Br Marvin JS AT by ChemAxon D Pears Part B Ni CH3 - CH2 - CH2 - CH = CH2+H2 → %3D Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atom 120 H 2 EXP 0oONT H. C SsNN H [1] CH₂CH₂CH3 H3CH₂CH₂C Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges), Atoms, and Templates toolbars. H 7 H 12D EXP. CONT Marvin JS by ChemAxon H C N O S CI Br - P FCompound name Ethanol Empirical formula Molecular formula Structural formula Acetic acid Caffeine bosas eihegord ards asod Broadening of Concept: 1. How compounds are formed from the elements? to a g ar tauM amulov Holco ion snizla M alou anilice clooimors1aro 2. How do atoms form ions and molecules? nettem to 2slhegoig avianslxe bns evienalni eisinso.t 3. Why we need to know the different types of chemical formula in the field of chemistry?