AB crystallizes in a body centred cubic lattice with edge length ‘a’ equal

AB crystallizes in a body centred cubic lattice with edge length ‘a’ equal to 387 pm. The distance between two oppositely charged ions in the lattice is

Options

(a) 335 pm
(b) 250 pm
(c) 200 pm
(d) 300 pm

Correct Answer:

335 pm

Explanation:

For a bcc lattice,
2(r⁺+r⁻) = √3 a
where r⁺ = radius of cation
r⁻ = radius of anion
a = edge length
.·. (r⁺+r⁻) = √3 ⨯ 387/2
= 335.142 pm ≈ 335 pm.

admin:

Related Questions

  1. What is the pH of 0.01 M glycine solution? For glycine, Ka₁ = 4.5 ˣ 10⁻³
  2. Which one of the following statements for the order of a reaction is incorrect
  3. Which of the following oxidation states are the most characteristic for lead
  4. The reaction of which of the following compounds would yield secondary amine
  5. The number of sigma and pi-bonds in but-1-ene-3-yne are