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Transition Metals and Catalytic Activity Quiz

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Transition Metals and Catalytic Activity Quiz

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Questions and Answers

What characteristic of transition metals is associated with their catalytic activity?

High enthalpy of atomisation

Colour of hydrated ions

Paramagnetic nature

Variable oxidation states (correct)

Why do transition metals show catalytic activity?

They form stable intermediates

They have a high enthalpy of atomisation

They are paramagnetic in nature

They exhibit variable oxidation states (correct)

Is Copper a non-element?

No, because it has partially filled f-orbitals

Yes, because it has completely filled d-orbitals

No, because it has completely filled s-orbitals (correct)

Yes, because it is a noble gas

In the context of conductivity, why does the conductivity decrease upon dilution of an electrolyte?

The number of ions per unit volume decreases Signup and view all the answers

What is the formula of the complex 'dichloridobis (ethane-1, 2-diamine) platinum(IV) nitrate'?

[Pt (en) (NO) Signup and view all the answers

Which property of transition metals allows them to provide new reaction pathways with lower energy?

Variable oxidation states Signup and view all the answers

What is the IUPAC name of the complex [Pt Cl₂(en)) (NO3)2]?

Dichloridobis(ethane-1,2-diamine)platinum(IV) nitrate Signup and view all the answers

Which statement about osmotic pressure as a colligative property is true?

Osmotic pressure depends on the molar concentration of the solution. Signup and view all the answers

Why is nucleophilic substitution easier in iodoethane compared to chloroethane?

Iodine is a better leaving group due to its large size. Signup and view all the answers

In the presence of incompletely filled d-orbitals, what is the common oxidation state of copper?

$Cu^{3+}$ Signup and view all the answers

Why does iodine exhibit a faster rate of nucleophilic substitution compared to chlorine?

Iodine has a larger size and is a better leaving group. Signup and view all the answers

What happens to the total vapor pressure when equal moles of liquid X and Y are mixed to form an ideal solution?

Total vapor pressure increases above the sum of the individual vapor pressures of X and Y. Signup and view all the answers