Elements of which period show maximum inert pair effect?

Important Questions on Classification of Elements and Periodicity in Properties

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 2>Q 21

In which of the following reactions, there is no change in valency?

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 2>Q 22

The $\mathrm{C}-\mathrm{C}$ and $\mathrm{Si}-\mathrm{C}$ Interatomic distances are $154$ $\mathrm{pm}$and $188$ $\mathrm{pm}$. The atomic radius of $\mathrm{Si}$ is:

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 2>Q 23

The atomic number of $V, Cr, Mn$ and $Fe$ are repectively $23,24,25$ and $26$. Which one of these may be expected to have the highest second ionisation enthalpy?

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 2>Q 24

In the context of lanthanoids, which of the following statements is not correct?

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 2>Q 25

The correct order of atomic radii is:

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 2>Q 26

Which of the following belongs to a representative group of elements of the periodic table?

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 2>Q 27

The correct order of second ionization potential of carbon, nitrogen, oxygen and fluorine is:

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Alpha Question Bank for Medical: Chemistry>Chapter 12 - Classification of Elements and Periodicity in Properties>Exercise 2>Q 28

Which element has highest electronegativity?