In the following transition metals, the maximum number of oxidation states are exhibited by
A.
chromium $$(Z = 24)$$
B.
manganese $$(Z = 25)$$
C.
iron $$(Z = 26)$$
D.
titanium $$(Z = 22)$$
Answer :
manganese $$(Z = 25)$$
Solution :
Manganese shows maximum number of oxidation states because it has 5 unpaired electrons in 3$$d$$ and also contains 2 electrons in 4$$s$$ sub-shell.
+2 +3 +4 +5 +6 +7
Other given metals show the following oxidation states
$$ Cr $$ = +2 +3 +4 +5 +6
$$ Fe $$ = +2 +3
$$ Ti $$ = +2 +3 +4
Releted MCQ Question on Inorganic Chemistry >> D and F Block Elements
Releted Question 1
When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is