Two gases helium and x are released from one end of an evacuated long cylinder at the same time if it takes helium atoms 3 times faster than gas X to effuse from one end. What is gas X?

chemists can use the electron cloud model to assign electrons to different atomic orbitals. atomic orbitals also explain the patterns in the periodic table

explanation:

indium, and thallium have three electrons i think

thats a little if u want the answer just look it up on google thats what i do haha : )

answer; talc and gypsum;