The total number of electrons present in $4^{\text{th }}$shell of Astatine$( {}_{85}\mathrm{At})$ are:

Important Questions on Classification of Elements and Periodicity in Properties

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Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-3>Q 1

The incorrect statement among the following is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-3>Q 2

Arrange the following ions in order of their increasing size : ${\mathrm{Li}}^{+},{\mathrm{Mg}}^{2+},{\mathrm{K}}^{+},{\mathrm{Al}}^{3+}.$

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Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-3>Q 3

Compounds that formally contain ${\mathrm{Pb}}^{4+}$ are easily reduced to ${\mathrm{Pb}}^{2+}.$ The stability of the lower oxidation state is due to _____ effect.

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Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-3>Q 5

lonic radii of :

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Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-3>Q 6

The correct order of radii is

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Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-3>Q 8

The set representing the correct order of first ionization potential is

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Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-3>Q 9

Identify the least stable ion amongst the following:

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Alpha Question Bank for Engineering: Chemistry>Chapter 13 - Classification of Elements and Periodicity in Properties>Exercise-3>Q 10

Which one of the following ions has the highest value of ionic radius?