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The Solid State
What type of magnetism is shown by a substance if magnetic moments of domains are arranged in same direction?
When the magnetic moments of domains are arranged in the same direction then, the substance shows ferromagnetism.
An element crystallizes in a f.c.c. lattice with cell edge of 250 pm. Calculate the density if 300 g of this element contain 2 × 1024 atoms.
Given an example each of molecular solid and an ionic solid.
(i) Molecular Solid - I2
(ii) Ionic Solid - NaCl
An element crystallizes in b.c.c lattice with cell edge of 500 pm. The density of the element is 7.5g cm-3. How many atoms are present in 300 g of the element ?
We have given,a= 500pmd=7.5 g cm-3mass = 300g