0.1 g atom of radioactive isotope `""_ZX^A` (half-life 5 days) is taken. How many number of atoms will decay during eleventh day?

Explanation

To solve the problem of how many atoms of the radioactive isotope `""_ZX^A` decay during the eleventh day, we will follow these steps:

### Step 1: Determine the initial mass and convert it to moles
Given that the initial mass of the radioactive isotope is 0.1 grams, we need to convert this mass into moles using the molar mass of the isotope. However, since the molar mass is not provided, we will denote it as \( M \) g/mol.

\[ \text{Number of moles (N}_0\text{)} = \frac{\text{mass}}{\text{molar mass}} = \frac{0.1 \text{ g}}{M \text{ g/mol}} = \frac{0.1}{M} \text{ moles} \]
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