Chemistry · 2013
NEET 2013 · 5 May · Code W · Q57
A metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g cm^-3. The molar mass of the metal is: (…
A metal has a fcc lattice. The edge length of the unit cell is $\displaystyle 404$ pm. The density of the metal is $\displaystyle 2.72$ g $\displaystyle \mathrm{cm}^{-3}$. The molar mass of the metal is :
$$\left(\mathrm{N}_{\mathrm{A}} \text { Avogadro's constant }=6.02 \times 10^{23} \mathrm{~mol}^{-1}\right)
$$
Official answer
(3)
$\displaystyle 27 \mathrm{~g} \mathrm{~mol}^{-1}$
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NEET (UG) 2013 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.