HSC Science (Computer Science) इयत्ता १२ वी - Maharashtra State Board Important Questions

Cu crystallizes in fcc unit cell with edge length of 495 pm. What is the radius of Cu atom?

Obtain the relationship between the density of a substance and the edge length of the unit cell.

The density of iridium is 22.4 g/cm³. The unit cell of iridium is fcc. Calculate the radius of iridium atom. Molar mass of iridium is 192.2 g/mol.

The following types of solids contain molecules as constituent particles?

A compound is made up of two elements X and Y and crystallizes in bcc structure. Atoms of X are present at the corners of the cube. Atoms of Y are present at the centre of the cube. The formula of the compound is ______.

A compound is made up of two elements X and Y and crystallizes in bcc structure. Atoms of X are present at the corners of the cube. Atoms of Y are present at the centre of the cube. The formula of the compound is ______.

Write the relationship between radius of atom and edge length of fcc unit cell.

If the total volume of a simple cubic unit cell is 6.817 × 10^-23 cm³, what is the volume occupied by particles in the unit cell?

Calculate the number of unit cells in 0.3 g of a species having density of 8.5 g/cm³ and unit cell edge length 3.25 × 10^-8 cm.

Calculate the packing efficiency for bcc lattice.

The unit cell of Na is bcc and its density is 0.97 g/cm³. What is the radius of a sodium atom if the molar mass of Na is 23 g/mol?

Derive the relationship between density of substance, its molar mass, and the unit cell edge length. Explain how you will calculate the number of particles, and a number of unit cells in x g of metal.

The coordination number of atoms in body-centred cubic structure (bcc) is ______.

Write the consequences of Schottky defect with reasons.

Explain metal deficiency defect with examples.

Aluminium crystallises in a cubic close-packed structure with a unit cell edge length of 353.6 pm. What is the radius of Al atom? How many unit cells are there in 1.00 cm³ of Al?

An element has a bee structure with unit cell edge length of 288 pm. How many unit cells and number of atoms are present in 200 g of the element?

Name a compound where Frenkel defect is found.

The relation between the radius of the sphere and the edge length in the body-centred cubic lattice is given by the formula ______.

Explain the following term:

Substitutional impurity defect