Atomic Review #2
Practice 3: Reactivity of Elements

A. Definitions

Stable

Alkali metals

Ions

Alkaline earth metals

Transition metals

Halogens

B. Short answer

What does an atom become when it gains or loses an electron?
 

Which family of elements is the most stable?  Why?
 

Look at the block of atoms as found in the periodic table (on p 202 of the packet).  Which of the elements is most reactive and why?
 

If an atom gains two electrons, what is the charge of the resulting ion?
 

What chemical characteristic do elements in a family share?
 

Why do alkali metals become more reactive as you move down the periodic table?
 
 

Explain why the noble gases do not react readily with other elements.
Practice 4: Bonding of Atoms
A. Definitions

Compounds

Valence electrons

Ionic bond

Subscript

Covalent bonds

Molecule

Diatomic molecules

Metallic bonds

Delocalized electrons

B. Multiple choice

1. _____2. _____3. _____4. _____

C. Short answer

1. Give two ways in which ionic bonds are different from covalent bonds.
a)
b)

2. What type of bond is most likely to occur between one atom that is a metal and one atom that is a nonmetal?
 

3. What type of bond occurs between atoms that make up a diatomic molecule?
 

4. In the molecule CO2, how many atoms of carbon and oxygen combine to form one molecule?
 

5. Describe the position of the electrons in a metallic bond, and then give characteristics of metal resulting from the metallic bonding.
 
 


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