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Chemistry LibreTexts

Periodic Table and Simple Ionic Compounds

  1. Complete the following Table:

Symbol

Atomic Number

Mass Number

Number of Protons

Number of Neutrons

Number of Electrons

Net Charge

\(\mathrm{^{34}_{16}Se^{2-}}\)

 

 

 

 

 

 

 

23

51

 

 

20

 

 

 

 

20

20

 

2+

  1. Would you expect each of the following atoms to gain or lose electrons when forming ions? What ion is the most likely in each case?
  1. K
  2. F
  3. Ca

 

  1. Fill in the following table:

Name

Symbol

Group

Period

Metal, nonmetal or metalloid?

Transition metal or main group?

sodium

 

 

 

 

 

 

Fe

 

 

 

 

 

O

 

 

 

 

  1. Give the formulas for the ionic compounds made of the following ions:
  1. Sc3+ and Br¯
  2. K+ and O2¯
  3. Ca2+ and I¯
  4. Cr3+ and S2¯
  5. Rb+ and F¯
  6. magnesium (Mg) and oxygen (O) ions
  7. potassium (K) and nitrogen (N) ions
  8. strontium (Sr) and fluorine (F) ions
  9. aluminum (Al) and sulfur (S) ions