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  • Please help! The ionic radii of A+ and B- ions are 0.98 x 10-10 m and 1.81 x 10-10 m. The coordination number of each ion in AB is:

The ionic radii of A+ and B- ions are 0.98 x 10-10 m and 1.81 x 10-10 m. The coordination number of each ion in AB is:

  • Option 1)

    6

  • Option 2)

    4

  • Option 3)

    8

  • Option 4)

    2

 

Answers (2)

best_answer

As we learned in concept

Radius ratio of ions = \frac{r_{cation}}{r_{anion}}\:=\:\frac{0.98}{1.81}\:=\:0.541

This radius ratio lies between 0.441-0.732 which gives us the octahedral structure and coordination number 6.


Option 1)

6

This option is correct.

Option 2)

4

This option is incorrect.

Option 3)

8

This option is incorrect.

Option 4)

2

This option is incorrect.

Posted by

satyajeet

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ANS IS 6

BECAUSE 0.98A IS THE IONIC RADIUS OF NA+ AND IN GENERALY WE HAVE NACL AS A SALT SO CL- IS HAVING 1.98A

SO BY DIVDING A/B WE GET 6

Posted by

DIPEN

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