Variable Oxidation States
Trending Questions
Q. 18. What is the oxidation number of sulphur in H2S2O3 and H2S2O7 and H2S2O8 and H2S2K6
Q. The species x^{2^+} has electronic configuration 1S^22S^22P^63S^23P^63D^9 how to find atomic number of this species?
Q. 45. the no. of sodium atoms in 2 moles of sodium ferrocyanide is ?
Q. The element whose electronic configuration is 1s2, 2s2, 2p6, 3s2 is a/an
Metal
Inert gas
Non metal
Non - metal
Q. Oxidation number of iron in Fe0.94O is :
- 2×0.94
- 20094
- 0.94
- 94200
Q. how can manganese get an oxidation number of +4 in mno2
Q. In this diagram,
The oxidation state "x" should be:
The oxidation state "x" should be:
- \N
- 2
- 3
- 4
Q. Why do same elements like Hydrogen , oxygen have different oxidation number with different types of element ?
Q.
why sodium ordinarily does not show an oxidation stae of +2 ?
Q. Zn reacts with dilute HNO3, Conc.HNO3 and very dilute HNO3. The oxidation number of nitrogen changes from HNO3 are a, b, c in product X, Y, Z respectively. What is the value of (a+b+c) is
(a) Zn+HNO3→Zn(NO3)2+"X"+H2O
dilute (20%)
(b) Zn+HNO3→Zn(NO3)2+"Y"+H2O
Conc (70%)
(a) Zn+HNO3→Zn(NO3)2+"Z"+H2O
very dilute (6%)
(a) Zn+HNO3→Zn(NO3)2+"X"+H2O
dilute (20%)
(b) Zn+HNO3→Zn(NO3)2+"Y"+H2O
Conc (70%)
(a) Zn+HNO3→Zn(NO3)2+"Z"+H2O
very dilute (6%)
Q. For the equilibrium, Hg2+2(aq)⇌Hg(l)+Hg2+(aq)the equilibrium constant is approximately equal to 103 . Therefore,
- `Hg(l)` is fairly stable in the aqueous solution
- `Hg(l)` in an aqueous solution undergoes disproportionation to yield both `Hg(l)` and Hg2+
- Addition of `KCl` shifts the equilibrium to the left
- Addition of Hg(l) does not have any role on the equilibrium
Q. 5 moles of Na2S2O3 losses 10 moles of the electron. What will be the oxidation number of sulphur?
Q.
The electrons which take part in order to exhibit variable oxidation states by transition metals are:
ns only
ns and (n-1)d only but not np
(n-1)d only
(n-1)d and np only but not ns
Q. What is variation of valency in periodic table
Q. Balance the following redox reaction in acidic medium : MnO4- + C2O42- ---------> Mn2+ + CO2 + H2O
Q. The magnetic moments of unpaired electrons in V, Cr, Mn respectively
Q. Which of the following are true regarding oxidation states of transition elements?
- d-block elements have variable oxidation state
- d-block elements have zero oxidation state
- d-block elements have only +1 oxidation state
- d-block elements have only +2 oxidation state
Q. Among the following the number of elements showing only one non-zero oxidation state is : O, Cl, F, N, P, Sn, Tl, Na, Ti.
Q. 39 Why doesnt the p-block elements have +2 oxidation state
Q.
give the formula of potassium dichromate