Oxidation number of phosphorus in PCl5 is.…
a) +3
b) +5
c) +2
d) zero
Oxidation number of nitrogen in NO2- is ……
a) +3
b) zero
c) -3
d) +1
Transition elements have ……… oxidation states in their compounds.
a) constant
b) zero
c) variable
d) all of these
Iron exists in ……….. oxidation states.
a) Fe(II)
b) Fe(III)
c) a & b both
d) Fe(I)
Copper has ……………..oxidation states.
a) 3
b) 2
c) 5
d) 6
Copper has ………… oxidation state.
a) Cu(I)
b) Cu(II)
c) Cu(III)
d) all of these
