Find moles of sodium in $8\text{ g}$

Molar mass of sodium $= 23\text{ g mol}^{-1}$

$n = \frac{\text{given mass}}{\text{molar mass}} = \frac{8}{23}\text{ mol}$

Find number of atoms

Number of atoms $= nN_A$

$N = \frac{8}{23}\times 6.02\times 10^{23}$

Calculate the numerical value

$\frac{8}{23} \approx 0.3478$

$N \approx 0.3478 \times 6.02 \times 10^{23}$

$N \approx 2.09 \times 10^{23}$

Compare with the form $x \times 10^{23}$

So,

$x \approx 2.09$

Nearest integer:

$x = 2$

Verification with stored answer

Derived answer $= 2$

Stored correct answer $= 2$

Hence, they agree.