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Which metal exhibits more than one oxidation state in their compounds.

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Important Questions on The d- and f-Block Elements

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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 1>Q 28
Iron is harder than sodium because:
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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 1
Amongst the following set of transition metal ions, the one in which all metal ions do not have d-electrons?
 
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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 2
Which of the following statements is incorrect?
 
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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 3
The names transition and inner transition metals are used to indicate the elements of:
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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 4
In which of the following pairs of elements, the n-1 d-orbitals have the same number of electrons?
 
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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 5
Which of the following factors may be regarded as the main cause of lanthanide contraction ?
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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 6
Copper has higher second ionisation energy than that of both adjacent elements. This is because of:
 
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Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 7
E⊝ values for couples Cr3+/Cr2+ and Mn3+/Mn2+ are -0.41 and +1.51 volts, respectively. Considering these values, select the correct option from the following statements.