Which of the following expression is correct in case of a CsCl unit cell (edge length, a)?

Which of the following expressions is correct in the case of a sodium chloride unit cell (edge length, a )?

Which of the following expressions is correct in the case of a sodium chloride unit cell (edge length, a )?

Which of the following expressions is correct in the case of a sodium chloride unit cell (edge length, a )?

Which of the following expressions is correct in the case of a sodium chloride unit cell (edge length, a )?

Which of the expressions is correct in the case of a sodium chloride unit cell (edge length = alpha):

Which of the following statements is//are correct about TVs in an fcc unit cell? Given: Edge length = a Body diagonai = b

Which of the following statements is//are correct about TVs in an fcc unit cell? Given: Edge length = a Body diagonai = b