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The molecule SiCl4 has a ________ shape.
 
tetrahedral
 
bent
 
linear
 
pyramidal
The element least likely to obey the octet rule in forming chemical bonds is
 
boron
 
fluorine
 
nitrogen
 
carbon
Elements in Period 3 or below don't always "obey" the octet rule because they ____.
 
can use s, p, and d orbitals for bonding.
 
can use s and p orbitals for bonding.
 
cannot use d orbitals for bonding.
 
cannot use s orbitals for bonding.
The name of S^2- is _______.
 
sulfide ion.
 
sulfate ion.
 
sulfite ion.
 
sulfur.
The formula Ca(NO3)2 tells us that one formula unit of this compound is composed of __ calcium atoms, __ nitrogen atoms, and __ oxygen atoms.
 
one; two; six
 
one; two; five
 
two; two; six
 
one; one; six
The formula for ammonium hydroxide is ________.
 
NH4OH
 
OHNH4
 
NH4NO3
 
NH4O
What is the name of AlCl3?
 
aluminum chloride
 
aluminum trichloride
 
aluminum(III) chloride
 
aluminum(III) trichloride
The formula PO4^:3- means that this ion is composed of:
 
1 atom phosphorus, 4 atoms oxygen, and 3 extra electrons
 
4 atoms phosphorus, 4 atoms oxygen, and 3 extra electrons
 
1 atom phosphorus, 4 atoms oxygen, and 3 electrons lost
 
4 atom phosphorus, 4 atoms oxygen, and 3 electrons lost


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