Answer: All of these quantities contain the same number of particles
Explanation: according to Avogadro's law, equal volumes of all gases under the same conditions of temperature and pressure contain equal numbers of molecules. According to Avogadro's principle, the number of Particles present in one mole of any substance is equal to 6.02x10^23
Therefore, 2moles will contain 2 x 6.02x10^23 = 1.204x10^24. This will be the same for all the elements listed in the question.