Which of the following contains the greatest number of atoms? i) 1 mole of ss molecules ii) 2 moles of P_(4) molecules iii ) 4 moles of chlorine molecules iv ) 8 moles of H atoms V ) 3 moles of ozone, O_(2) a. ii b. i C. iv d. V e. iii

To determine which option contains the greatest number of atoms, we need to calculate the total number of atoms in each case.<br /><br />i) 1 mole of ss molecules: The number of atoms is not specified, so we cannot determine the number of atoms in this case.<br /><br />ii) 2 moles of $P_{4}$ molecules: Each molecule of $P_{4}$ contains 4 atoms of phosphorus. Therefore, 2 moles of $P_{4}$ molecules contain $2 \times 4 = 8$ moles of phosphorus atoms.<br /><br />iii) 4 moles of chlorine molecules: Each molecule of chlorine (Cl$_2$) contains 2 atoms of chlorine. Therefore, 4 moles of chlorine molecules contain $4 \times 2 = 8$ moles of chlorine atoms.<br /><br />iv) 8 moles of H atoms: This option directly states that there are 8 moles of hydrogen atoms.<br /><br />v) 3 moles of ozone, $O_{2}$: Each molecule of ozone (O$_3$) contains 3 atoms of oxygen. Therefore, 3 moles of ozone contain $3 \times 3 = 9$ moles of oxygen atoms.<br /><br />Comparing the number of moles of atoms in each option, we can see that option v) 3 moles of ozone, $O_{2}$ contains the greatest number of atoms with 9 moles of oxygen atoms.<br /><br />Therefore, the correct answer is:<br /><br />d. V