The number of atoms in 8 g of sodium is x× 1023. The value of x is ____.(Nearest integer) [Given : NA=6.02×1023 mol; Atomic mass of Na=23u

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The number of atoms in $8 g$ of sodium is $x \times$ 10²³. The value of $x$ is ____.(Nearest integer) [Given : $N_{A} = 6.02 \times 10^{23} m o l$ ; Atomic mass of $N a = 23 u$

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answer is 2.

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Detailed Solution

Number of moles of sodium $= \frac{8}{23}$

Number of sodium atom $= \frac{8}{23} \times 6 \times 10^{23}$ $= 2.08 \times 10^{23}$

Hence, the correct answer is $= 2.08$

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