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