What is the hottest layer of gas in the sun?

Corona, Chromosphere, Photosphere or Core? The answer given is Corona, but is that correct, and why? I think the hottest layer is the core, but is that made up of solid, liquid or gas? Please post links(proof) or explanations with answer. Much appreciated, thanks!What is the hottest layer of gas in the sun?
The corona is hottest layer of the Sun's ';atmosphere'; but the core is the hottest layer overall. The entire Sun is made of gas. (technically the entire Sun is plasma but that is beyond the scope of this discussion) Temperatures are too high for solids or liquids to exist.





This website from Stanford University has the following information:





http://solar-center.stanford.edu/vitalst鈥?/a>





Interior (center) (core)


15,000,000 K


Surface (effective) of Sun (photosphere)


5800 K


Sunspot umbra (typical)


4240 K


Penumbra (typical)


5680 K


Chromosphere


4300 to 50,000 K


Corona


800,000 to 3,000,000 K





As you clearly see it is the core (center) that is the hottest.





http://sohowww.nascom.nasa.gov/classroom鈥?/a> is another good website to back up the fact that the core is the hottest ';gasseous'; layer.What is the hottest layer of gas in the sun?
The sun is gas throughout, and the core is the hottest. For the outer layers of the sun, the corona is the hottest, but the gas is extremely thin, so the heat would not be felt.