An element has a cep lattice with a cell edge length of 300 sm. The
density of the element is log/em? How many atoms are present in
270 g of the element ?
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The actual question is: an element has a ccp lattice with a cell edge length of 300pm the density of the element is 10 g/cm³. How many atoms are present in 270g of element?
No of atoms in ccp lattice: 4 = Z
edge length, a = 300 pm = 300 × 10⁻¹⁰ cm
N = 6.02 × 10²³ = Avogadro's constant
density of element = 10 g/cm³
According to formula,
No of atoms = no of moles * N
= 4 × 10²⁵ atoms
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