General Science IBDP Chemistry Uncategorized 4. Chemical bonding and Structure HL June 8, 2021June 8, 2021 Shveta 0 Comments chemical bonding and structure, ibdp chemistry 1.What is the best description of the carbon-oxygen bond lengths in CO32–?One short and two long bonds One long and two short bonds Three bonds of the same length Three bonds of different lengths 2. What is the number of sigma (σ) and pi (π) bonds and the hybridization of the carbon atom in Sigma Pi Hybridization A. 4 1 sp2 B. 4 1 sp3 C. 3 2 sp3 D. 3 1 sp2 ABCD3. Which of the following contain a bond angle of 90°? I. PC14+ II. PCl5 III.PCl6–I and II only I and III only II and III only 4. Which allotropes contain carbon atoms with sp2 hybridization? I. Diamond II. Graphite III. C60 fullereneI and II only I and III onlyII and III only I, II and III 5. What is the molecular shape and the hybridization of the nitrogen atom in NH3? Molecular shape Hybridization A. tetrahedral sp3 B. trigonal planar sp2 C. trigonal pyramidal sp2 D. trigonal pyramidal sp3 ABCD6. Which statement about sigma and pi bonds is correct?Sigma bonds are formed only by s orbitals and pi bonds are formed only by p orbitalsSigma bonds are formed only by p orbitals and pi bonds are formed only by s orbitalsSigma bonds are formed by either s or p orbitals, pi bonds are formed only by p orbitalsSigma and pi bonds are formed by either s or p orbitals7. Consider the following statements. I. All carbon-oxygen bond lengths are equal in CO32–. II. All carbon-oxygen bond lengths are equal in CH3COOH. III. All carbon-oxygen bond lengths are equal in CH3COO–. Which statements are correct?I and II onlyI and III onlyII and III onlyI, II and III 8. Which statement is correct about multiple bonding between carbon atoms?Double bonds are formed by two π bondsDouble bonds are weaker than single bondsπ bonds are formed by overlap between s orbitalsπ bonds are weaker than sigma bonds9. Which particles can act as ligands in complex ion formation? I. C1– II. NH3 III. H2OI and II only I and III only II and III only I, II and III 10. Which statements correctly describe the NO2– ion? I. It can be represented by resonance structures. II. It has two lone pairs of electrons on the N atom. III. The N atom is sp2 hybridized.I and II only I and III only II and III only I, II and III 11. Which is the smallest bond angle in the PF5 molecule?90° 109.5° 120° 180° 12. Which types of hybridization are shown by the carbon atoms in the compound CH2 = CH−CH3? I. sp II. sp2 III. sp3I and II only I and III onlyII and III onlyI, II and III 13. Identify the types of hybridization shown by the carbon atoms in the molecule CH3CH2CH2COOH I. sp II. sp2 III. sp3I and II only I and III only II and III onlyI, II and III 14. Which molecule is square planar in shape?XeO4 XeF4 SF4 SiF4 15. What is the hybridization of nitrogen atoms I, II, III and IV in the following molecules? I II III IV A. sp2 sp2 sp3 sp3 B. sp3 sp3 sp2 sp2 C. sp2 sp2 sp sp D. sp3 sp3 sp sp ABCD16. What is the molecular geometry and the Cl–I–Cl bond angle in the ICl4– ion?Square planar 90° Square pyramidal 90° Tetrahedral 109° Trigonal pyramidal 107° 17. What is the geometry of the bonds around an atom with sp2 hybridization?2 bonds at 180°3 bonds at 120°2 bonds at 90°, 1 bond at 180° 4 bonds at 109° 18. How many sigma (σ) and pi (π) bonds are present in the structure of HCN? σ π A. 1 3 B. 2 3 C. 2 2 D. 3 1 ABCD19. How many lone pairs and bonding pairs of electrons surround xenon in the XeF4 molecule? Lone pairs Bonding pairs A. 4 8 B. 0 8 C. 0 4 D. 2 4 ABCD
