Unit 6
Review Worksheet Answers
1. less
2. ionic - transfer of e-; covalent - share e-
3. >
1.7 = ionic; < 1.7 = covalent
0 – 0.3 = nonpolar covalent; 0.3 – 1.7 = polar covalent
4. metal
& nonmetal
5. polar covalent - 2 different nonmetals; nonpolar covalent - 2 of the same nonmetal
6. Put
them on central atom.
7. double
bond
8. first
element written is central atom
9. -
no unshared e- pairs on central atom
- surrounding atoms must be same element
10. A
= central atom; B = surrounding atoms; E = unshared e- pairs on central atom
11. There are 2 surrounding atoms
12. AB2E
& AB2E2
13. AB
& AB2
14. AB4
15. AB3
16. AB3E
17. ionic
- formula unit; covalent - molecule
18. molecular
19. ionic
20. ionic
21. molecular
22. hydrogen
bonding à dipole-dipole forces à
dipole-induced dipole forces à London
dispersion forces
23. hydrogen
bonding - b/n molecules of NH3, H2O, & HF
dipole-dipole forces - b/n polar molecules
dipole- induced dipole forces - polar &
nonpolar molecules
London dispersion - nonpolar molecules
& noble gases
24.
(D) < (E) < (C) < (A) < (B)
25.
(A) AB4,
tetrahedral, nonpolar, London dispersion
(B) AB2E2,
bent, polar, dipole-dipole & London
(C)
AB3E,
trigonal pyramid, polar, hydrogen bonding,
dipole-dipole, London
(D)
AB3,
trigonal planar, nonpolar, London
(E) AB2, linear, nonpolar,
London
(F) AB2E, bent, polar,
dipole-dipole, London
Back to the Unit
6 Review Worksheet