Argon, carbon dioxide, oxygen and nitrogen are all present in air. What is the order in which the gases will be formed when liquid air is slowly warmed?

Gas Boiling point / oC
Ar − 186
CO2 − 78
O2 − 183
N2 − 196

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.