The ionic radii (in${\mathrm{A}}^{°}$) of ${\mathrm{N}}^{3-}, {\mathrm{O}}^{2-}$and ${\mathrm{F}}^{-}$are respectively

Important Questions on Classification of Elements and Periodicity in Properties

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 26

The species $\mathrm{Ar}, {\mathrm{K}}^{+}$and ${\mathrm{Ca}}^{2+}$ contain the same number of electrons. In which order do their radii increase?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 27

Which of the following sets of ions represents a collection of isoelectronic species ?

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 28

The sizes of following species increase in the order:

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 29

For ${\mathrm{Na}}^{+} , {\mathrm{Mg}}^{2+} , {\mathrm{F}}^{-}$and ${\mathrm{O}}^{2-}$the correct order of increasing ionic radii is

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 30

 The correct order of decreasing ionic radii among the following isoelectronic species is

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 31

The increasing order of the ionic radii of the given isoelectronic species is

HARD

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 32

The correct sequence which shows decreasing order of the ionic radii of the element is

EASY

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 3 - Classification of Elements and Periodicity in Properties>Competition Focus>Q 33

The correct arrangement for the ions in the increasing order of their radii is