Give examples and suggest reasons for the following features of the transition metal chemistry: (i) The lowest oxide of transition metal is basic, the highest is amphoteric / acidic. (ii) A transition metal exhibits highest oxidation state in oxides and fluorides. (iii) The highest oxidation state is exhibited in oxoanions of a metal.
Answers
Answer:
Represent root ofi)V6 ii)
Find the value of a and b:
Simplify: i) (23) Ⓡ (23)
Evaluate: i) (,) ii)(100000
LYNOMIAL:
Answer:
(i) Mn^{(II)}OMn
(II)
O is basic and \displaystyle Mn_2^{(VII)}O_7Mn
2
(VII)
O
7
is acidic.
Cr^{(II)}OCr
(II)
O is basic and \displaystyle Cr_2^{(III)}O_3Cr
2
(III)
O
3
is amphoteric.
The ions in lower oxidation state can readily donate electrons and acts as bases and the ions in high oxidation states have a tendency to accept electrons and act as an acid.
(ii) Small sized (and highly electronegative) oxygen and fluorine can readily oxidize the metals. For example, \displaystyle Os^{(VI)}F_6Os
(VI)
F
6
and \displaystyle V_2^{(VI)}O_5V
2
(VI)
O
5
.
(iii) Due to high electronegativity and high oxidizing power of oxygen, metal oxoanions have highest oxidation state. For example, In dichromate ion, CrCr has +6+6 oxidation state and in permanganate ion, MnMn has +7+7 oxidation state.
Explanation: