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Document Sample
Name ______________ Date ___ ___ Period _
CHEMISTRY
IONIC VS COVALENT BONDING
1. What part of an atom's structure seems to be largely responsible for its chemical properties?
2. a. What is ionic bonding? ______________________________________________________
b. What is covalent bonding? ___________________________________________________
3. When an ionic bond is formed between two atoms, each atom usually attains an outer shell arrangement similar to what
group of elements?
5. What is an ion?
6. Write electron-dot symbols for the following elements:
a. Phosphorus _____________ f. Potassium ______________
b. Calcium _______________ g. Sulfur _________________
c. Bismuth _______________ h. Neon _________________
d. Carbon _______________ i. Lead __________________
e. Aluminum ____________ j. Nitrogen _______________
7. Complete the Lewis Dot Structure for the following covalent bonds:
Molecular Formula Electron Dot
HCl
H2O
NH3
O2
N2
CH4
8. Complete the following table regarding ions.
Ion Number of Number of Number of Electrons Same Electrons as
Ion Name
Symbol Protons Electrons Lost or Gained What Noble Gas?
e.g. fluoride F- 9 10 Gained one Neon
1. 53 54
2. 16 Gained two
3. potassium Lost one
4. Ca2+
5. 35 36
6. Sr²+
9. Write electron-dot formulas and ionic formulas for the compounds that would be formed between the following pairs or
elements:
Elements Electron-dot formula
a. Lithium and iodine
b. Calcium and fluorine
c. Potassium and sulfur
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