Chemistry · 2020
JEE Main · 5 September 2020, Shift 1 · Q40
A diatomic molecule X_2 has a body-centred cubic (bcc) structure with a cell edge of 300 pm. The density of the molecule is 6.17 g cm^-3. The number…
A diatomic molecule $\displaystyle X_2$ has a body-centred cubic (bcc) structure with a cell edge of $\displaystyle 300$ pm . The density of the molecule is $\displaystyle 6.17 \mathrm{~g} \mathrm{~cm}^{-3}$. The number of molecules present in $\displaystyle 200$ g of $\displaystyle \mathrm{X}_2$ is :
(Avogadroconstant $\displaystyle \left(\mathrm{N}_{\mathrm{A}}\right)=6 \times 10^{23} \mathrm{~mol}^{-1}$ )
Official answer
(2)
$\displaystyle 4 \mathrm{~N}_{\mathrm{A}}$
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JEE Main 2020 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.