How many atoms are in a molecule of RSq?

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

How have the greenhouse gasses increased from the year 2000 to 2018

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm