please answer the 2 questions please 7. Which of the following would you expect to have ionic bonds?A) CO B) FBr C) NF3 D) NaCl8. Which of the following molecules has nonpolar covalent bonds?A) HCI B) N2 C) CHC13 D) NO

ANS 7 IN CO molecule ,C has 4 valence electron .it cannot form ionic bond to loose 4 electron and…

Answered: 7. Which of the following would you…

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Chapter12: Chemical Bonding

Section: Chapter Questions

Problem 3STP

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Successive substitution of F atoms for H atoms in the molecule CH4 produces the molecules CH3F, CH2F2, CHF3, and CF4. a. Draw Lewis structures for each of the five molecules. b. Using VSEPR theory, predict the geometry of each of the five molecules. c. Specify the polarity (polar or nonpolar) for each of the five molecules.
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.
escribe the type of bonding that exists in the Cl2(g)molecule. How does this type of bonding differ from that found in the HCl(g)molecule? How is it similar?
hat does it mean to say that a bond is polar? Give two examples of molecules with polar bonds. Indicate in your examples the direction of the polarity.
Draw Lewis structures for the following species. (The skeleton is indicated by the way the molecule is written.) (a) Cl2CO (b) H3Câ€”CN (c) H2Câ€”CH2
Given the bonds C N, C H, C Br, and S O, (a) which atom in each is the more electronegative? (b) which of these bonds is the most polar?
Define the term lattice energy. Why, energetically, do ionic compounds form? Fig. 3-8 illustrates the energy changes involved in the formation of MgO(s) and NaF(s). Why is the lattice energy of MgO(s) so different from that of NaF(s)? The magnesium oxide is composed of Mg2+ and O2 ions. Energetically, why does Mg2+O2 form and not Mg+O? Why doesnt Mg3+O3 form?
2. Which of the following compounds contains both ionic and covalent bonds? A) Ammonia B) Methanol C) Potassium carbonate D) Sodium chloride 3. All are ionic compounds except A) A9CI B) HNO3 C) NO2 D) (NH4)2CO3 4. In which one of the following does the central atom not possess an 'octet' in its outer shell? A) BH3 B) NH3 C) H2O D) CO2 5. Which of the following statements is CORRECT? A) Na* and Mg* are isoelectronic B) Na* and O2- are isoelectronic C) Mg²* and Cl are isoelectronic D) F and Ch are isoelectronic
Explain why CH4 is one of the most common molecules found in nature. Are the bonds between the atoms ionic or covalent? What is the difference between an ionic bond and a covalent bond?
Which of the following is held together by only covalent bonds? a) NaBr b)MgS c)NF3 d) BaSO4
Which pure substance below contains both covalent and ionic bonding? a) CsK b) Na2S c) HCl d) NH4Cl e) F2
Which best represents a macromolecule consisting of covalently bonded atoms? A) CaCl2 B) CH4 C) SiC D) MgY Why do atoms of xenon exist in nature as single, unbonded atoms? A) they have very high electronegativity B) They have very low electronegativity C) They lack an octet of valence electrons D) They possess an octet of valence electrons Which is most likely to form cations (positive ions)? A) Carbon B) Helium C) Magnesium D) Nitrogen Which ion has stability due to an duet of electrons in its outermost energy level? A) Be2+ B) H+ C) O2- D) P3-

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7. Which of the following would you expect to have ionic bonds? A) CÓ B) FBr C) NF3 D) NaCl 8. Which of the following molecules has nonpolar covalent bonds? A) HCl B) N2 C) CHC13 D) NO