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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Match the properties given in Column I with the metals given in Column II. Column I (Property) Column II (Metal) (i) Element with highest secondionisation enthalpy (a) Co (ii) Element with - Chemistry

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प्रश्न

Match the properties given in Column I with the metals given in Column II.

  Column I (Property) Column II (Metal)
(i) Element with highest second
ionisation enthalpy
(a) \[\ce{Co}\]
(ii) Element with highest
third ionisation enthalpy
(b) \[\ce{Cr}\]
(iii) \[\ce{M}\] in \[\ce{M(CO)6}\] is (c) \[\ce{Cu}\]
(iv) Element with highest heat
of atomisation
(d) \[\ce{Zn}\]
    (e) \[\ce{Ni}\]
जोड्या लावा/जोड्या जुळवा
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उत्तर

  Column I (Property) Column II (Metal)
(i) Element with highest second
ionisation enthalpy
(c) \[\ce{Cu}\]
(ii) Element with highest
third ionisation enthalpy
(d) \[\ce{Zn}\]
(iii) \[\ce{M}\] in \[\ce{M(CO)6}\] is (b) \[\ce{Cr}\]
(iv) Element with highest heat
of atomisation
(a) \[\ce{Co}\]
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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: The d-and f-Block Elements - Multiple Choice Questions (Type - I) [पृष्ठ ११३]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
पाठ 8 The d-and f-Block Elements
Multiple Choice Questions (Type - I) | Q 58 | पृष्ठ ११३

संबंधित प्रश्‍न

Why is Sc3+ colourless while Ti3+ coloured? (Atomic number Sc = 21, Ti =22)


Which of the following cations are coloured in aqueous solutions and why ?

Sc3+, V3+, Ti4+, Mn2+ (At. Nos. Sc = 21, V = 23, Ti = 22, Mn = 25)


What are alloys?


Comment on the statement that elements of the first transition series possess many properties different from those of heavier transition elements.


How would you account for the following? 

Zr (Z = 40) and Hf (Z = 72) have almost identical radii.

 


Why do transition metals exhibit higher enthalpy of atomization? 


Ionisation enthalpies of Ce, Pr and Nd are higher than Th, Pa and U. Why?


Assertion: \[\ce{Cu^2+}\] iodide is not known.

Reason: \[\ce{Cu^2+}\] oxidises \[\ce{I^-}\] to iodine.


Answer the following question:

Which element of the first transition series has lowest enthalpy of atomisation?


A violet compound of manganese (A) decomposes on heating to liberate oxygen and compounds (B) and (C) of manganese are formed. Compound (C) reacts with KOH in the presence of potassium nitrate to give compound (B). On heating compound (C) with conc. \[\ce{H2SO4}\] and \[\ce{NaCl}\], chlorine gas is liberated and a compound (D) of manganese along with other products is formed. Identify compounds A to D and also explain the reactions involved.


Passing H2S gas into a mixture of Mn2+ and Ni2+, Cu2+, ions in an acidified aqueous solution precipitates.


On adding NaOH, solution to the aqueous solution of K2CrO7 the colour of the solution changes from


Which of the following characteristics of transition metals is associated with their catalytic activity?


Which one among the following metals of the 3d series has the lowest melting point?


Which property of transition metals enables them to behave as catalysts?


Consider the following standard electrode potential values:

\[\ce{Fe^{3+}_{ (aq)} + e^- -> Fe^{2+}_{ (aq)}}\], E0 = +0.77 V

\[\ce{MnO^{-4}_{ (aq)} + 8H^+ + 5e^- -> Mn^{2+}_{ (aq)} + 4H2O_{(l)}}\], E0 = +1.51 V

What is the cell potential for the redox reaction?


Write the number of unpaired electrons in Cr3+.
(Atomic number of Cr = 24)


The compounds of \[\ce{Ti^4+}\] ions are colourless due to ______.


Give a reason for the following:

Transition metals possess a great tendency to form complex compounds.


Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following point:

Oxidation states


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