The number of atoms present in 0.1 mole of P4(at. mass = 31) are

Question

The number of atoms present in 0.1 mole of P4(at. mass = 31) are (A) 2.4 × 1024 atoms (B) same as in 0.05 mol of Sg (C) 6.02 × 1022 atoms (D) same as in 3.1 g of phosphorus

Tardigrade Admin · Accepted Answer

0.1 mole p4 contains =4×0.1×6.02×1023 P atoms 0.05 mole of S8 contains =8×0.05×6.02×1023 s atoms

Q. The number of atoms present in 0.1 mole of $P_{4}$ (at. mass = 31) are

$2.4 \times 1 0^{24}$ atoms

same as in 0.05 mol of Sg

$6.02 \times 1 0^{22}$ atoms

same as in 3.1 g of phosphorus

$0.1$ mole $p_{4}$ contains
$= 4 \times 0.1 \times 6.02 \times 1 0^{23} P$ atoms
$0.05$ mole of $S_{8}$ contains
$= 8 \times 0.05 \times 6.02 \times 1 0^{23} s$ atoms

Q. The number of atoms present in 0.1 mole of P4​(at. mass = 31) are

2.4×1024 atoms