Which of the following figures does not represent 1 mole of dioxygen gas at STP?
(i) 16 grams of gas
(ii) 22.7 litres of gas
(iii) 6.022 × 1023 dioxygen molecules
(iv) 11.2 litres of gas
The answer is the option (i) 16 grams of gas, (iv) 11.2 litres of gas
Explanation: 1 mole of O2 has 6.023 × 1023 molecules of O2, & at STP it occupies 22.4-litre volume and has a molar mass of 32g.