Home
Class 11
CHEMISTRY
Consider the isoelectronic species, Na^(...

Consider the isoelectronic species, `Na^(+),Mg^(2+),F^(-)` and `O^(2-)`. The correct order of increasing length of their radii is:

A

`F^(-)ltO^(2-)ltMg^(2+)ltNa^(+)`

B

`Mg^(2+)ltNa^(+)ltF^(-)ltO^(2-)`

C

`O^(2-)ltF^(-)ltNa^(+)ltMg^(2+)`

D

`O^(2-)ltF^(-)ltMg^(2+)ltNa^(+)`

Text Solution

Verified by Experts

The correct Answer is:
B
For isoelectronic species,ionic radii decrease with increase in nuclear charge(I.e.,no. of protons).Thus,the cation with greater +Ve charge will have a smaller radius and the anion with greater -Ve charge will have a larger radius.Thus,the correct order of increasing ionic radii is `Mg^(2+)ltNa^(+)ltF^(-)ltO^(2-)`
Promotional Banner

Topper's Solved these Questions

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS|Exercise Higher Order Thinking Skills|10 Videos

  • CHEMICAL BONDING & MOLECULAR STRUCTURE

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • ENVIRONMENTAL CHEMISTRY

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

The correct order of increasing radii are

For Na^(+),Mg^(2+),F^(-) and O^(2-) , the correct order of increasing ionic radii is :

The correct order of increasing radii of the elements Si,Al,Na and P is

Arrange the following isoelectronic species (O^(2-) , F^(-) , Na^+, Mg^(2+)) in order of: increasing ionization energy