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- 1. Multiple Choice
Valence electrons are the ________
number of electrons lost
number of electrons gained
electrons in the innermost energy level of an atom
electrons in the outermost energy level of an atom
- 2. Multiple Choice
Structures atoms and molecules whose valence electrons are represented by dots are known as ________ structures
Arrhenius
Brönsted
Lewis
Lowry
- 3. Multiple Choice
Which pair of elements can combine to form ionic bonds?
H and Cl
H and N
S and Sr
Xe and F
- 4. Multiple Choice
A positive ion is known as a/an ________
anion
cation
proton
electron
- 5. Multiple Choice
The bond formed by transfer of electrons is known as _____ bond
covalent
dative
ionic
metallic
- 6. Multiple Choice
Which of the following statement is incorrect?
All elements in the second period of the periodic table contain two valence electrons.
Electron configurations may be used to determine the number of valence electrons of an element.
In the periodic table, the number of valence electrons determines the group placement of an element.
The number of valence electrons of the representative elements is equal to the total number of electrons in the outermost shell.
- 7. Multiple Choice
What will happen if argon (Ar) and barium (Ba) are made to react?
Ba will gain electrons.
Ar will lose electrons.
Ba and Ar will share electrons.
Ba and Ar will not form a compound.
- 8. Multiple Choice
Which of the following particles are shared or transferred during compound formation?
electrons
ions
neutrons
protons
- 9. Multiple Choice
How many electrons are in the outermost shell of bonded atoms that follow the octet rule?
two
four
six
eight
- 10. Multiple Choice
Which of the following pairs of elements and valence electrons is incorrect?
Al – 3
Br – 7
S – 4
Sr - 2
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