Question

ANSWERS ONLY.

1. Why is anatom of sulfur smaller than an atom of silicon despite sulfurhaving more mass?






2. True orFalse?

a. Sulfur likesto gain two electrons. True False
b. Calcium as anion has a -2 charge. True False
c. Chlorineatoms like to gain one electron. True False
d. Sodium atomslike to gain one electron. True False
e. F-1 isisoelectronic with argon. True False
f. Mg2+ isisoelectronic with neon. True False

3. Write theelectron configuration of Mg+2ion:________________________________________

4. Write theelectron configuration of F -1 ion:_____________________________________

5. Which are theionic compounds: N2O NaCl BaBr2 SiO2 AlF3

6. In an ionicbond the metal loses electrons and the nonmetal ________________electrons.

7. Which islarger in each pair: Ca or Ca2+, P or P3- , Si or Cl 30. In acovalent bond, the two nonmetal atoms share electrons. Circle: Trueor False








8. Which are thePOLAR bonds: C-H C-F O-H O-O Br-Br F-Br

9. What is themost electronegative element? ____________

10. What is theshape for PH3 ? ______________________________

11. What is theshape for Cl2? ______________________________

12. What is theshape for NH4 +1

13. What is theshape for HOCl
14. Is the PH3molecule overall polar or nonpolar?___________________________
15. Is the SiBr4molecule, overall polar or nonpolar? ____________
_______