Crystál AB (rock salt structure) has molecular weight '6.023 x u where 'x' is an arbitrary number in u. If the minimum distance between cation and anion is 'x^1/ 3, nm' (i) find the density in 'kgm^-3'. if the measured density is '20 kgm^-3',(ii) Identify the type of point defect.

A compound A^(+)B^(-) has rock salt type structure. The formula mass of Ab is 6.023 y amu and the closest approach distance of A^(+)B^(-) in the crystal is y^(1//3) nm. What is the density of the lattice in Kg//m^(3) ?

An ionic compound AB has a rock salt structure with A:B=1:1. the formula mass of AB is 6.02y amu and the closest A-B distance is y^(1//3) nm. Calculate the density of lattice in kg m^(-3) .

A-scientist was performing X-ray diffraction studies on a crystal having rock salt structure. The molecular mass of the.crystal ls 239 gmol^-1 .The density of the crystal was found to be 12.7 gcm^-3 The scientist is supposed to study only those crystals having edge length below 0.75 mm. Show whether the crystal selected by the scientist was appropriate or not.

Consider a point P(-2, -1, -4) and the plane vecr.(3hati+4hatj+5hatk)=10. Find the distance between the given plane and the plane 6x+8y+10z=3

a) What is the number which gives midpoints of the points denoted by the numbers x and y on the number line. b) If the numbers x and y are thought of as points on a number line, what is the geometrical meaning of |x-y| ? c) .Find those x satisfying each of the equations below. i) |x-1|=|x-3| ii) |x-1|=|x+3| ifi) |x+1|=|x-3|

Find the Cartesian equation of the plane passing through the point (1,2,-3) perpendicular to the vector2i-j+2k . Find the angle between the Plane and the line (x-1)/2=(y-3)/3=z/6