A sample of AlF3 contains 3*10^24 F- ions. The number of formula units of this sample is :(Options in description)

Question

A) 2*10^24

B) 1*10^24

C) 5*10^23

D) 9*10^24

Answer 1

Here, AlF₃ is an ionic compound in which one formula unit of this has three fluoride ions attached to it.

So, in 3 x 10²⁴ number of fluoride ions, number of formula units of AlF₃ is equal to 

= (3 x 10²⁴) / 3 = 1 x 10²⁴ Formula Units

So, option (B) is correct

Comments

Thank you again....