How many covalent bonds will a nitrogen atom usually form?

a. How many sticks did you need to make the skeleton structure?____________ b. How many sticks are left over? ____________ If your model is to obey the octet rule, each ball must have four sticks in it except for hydrogen atom balls, which need and can only have one. Each atom in an octet rule species is surrounded by four pairs of electrons. c. How many holes remain to be filled? ____________ Fill them with the remaining sticks, which represent nonbonding electron pairs. Draw the complete Lewis structure for NH2Cl using lines for bonds and pairs of dots for nonbonding electrons.

Which of the following statements is false concerning bonding? Elements with extremely different electronegativities tend to form ionic bonds with each other. In an N—O bond. electron density is greater near the O atom. An N—O bond is an example of a polar covalent band. In general, chemical bonds form to minimize energy. The bond in KBr is formed by sharing electrons.

Which of the following compounds is likely to have the strongest H-X bond? a.HBr (141 pm) b.HI (161 pm) c.HF (92 pm) d.H2S (134 pm) e.HCl (127 pm)

41.How many single bonds that are not part of any double bonds can be found in the best Lewis stucture of CO 2?   A. 0   B. 1   C. 2   D. 3

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Rank each of the molecules below in order of the shortestto the longest sulfur-oxygen bond length.a. S O 2       b. S O 3 2—       c. S O 4 2—

10. Which of the following is technically considered a nonpolar covalent bond? A. C – H B. O – N C. P – Cl D. O – F E. S – Cl

Which of the following molecules has the shortest nitrogen-to-nitrogen bond: N2H4, N20, N2, N204? Select one: O a. N2 O b. N204 O c. N2H4 d. N20 Several resonance structures for the molecule CO2 are shown. Which one of them is likely to be of little importance in describing the bonding in this molecule? Select one: a. 0=C3D0 O b. 0 C-0: 2+ - c. T0-C-O

4. CHCl3 a. Lewis structure Electronic geometry_ C. d. Molecular shape_ e. Bond angle? b. Draw the different bonds and label their polarity. inorpelt b Soigns broff 02 8