Answer:
The first one
Explanation:
I can't read them well: it should be
** this is the expanded version
Answer 2: 1 mole = 6.03 x 1023 particles. One mole of any element has a mass in grams that is equal to its atomic number, and has exactly 6.02 x 1023 atoms - however because the atoms of each element have different sizes and weights, then the volume that each one occupies is different.
Credits to
https://scienceline.ucsb.edu/getkey.php?key=274
This is going to lead you to the element Argon. Is this what you are asking?