Name at least 4 other gases in the atmosphere besides oxygen and nitrogen

78.08% nitrogen 
20.95% oxygen 
an average of 0.247% water vapour (very variable) 
& approximately 1% of other gases 

These other gases are the noble gases consisting of :- 
Argon (0.93%) 
Neon (less than 0.01%) 
Helium (less than 0.01%) 
Krypton (less than 0.01%) 
Xenon (less than 0.01%) 
Radon (less than 0.01%) 

Regarding non-Nobel gases, there is also Carbon dioxide at 0.038%, and tiny traces of Hydrogen. 

There are minute quantities of many other gases, such as methyl iodide, produced by bio- and geo-chemical reactions and used in bio-chemical reactions in living organisms, and whose importance to all life even in concentrations of less than one part per million million is only just beginning to be realised.