That is the "Chromosphere."
There are actually 5 layers. Going from the inside out they are: Thermonuclear Core, Radiative Zone, Convective Zone, Photosphere, and the Chromosphere.
Not at the moment. Currently it is just on the outer (cool) edge of the habitable zone [See Link]. However, give a couple of million years this will change as the Sun gets hotter.
all of it.......... since we orbit around the sun we eventually through out the year see the whole thing.
The Convective zone. See related links for more information.
Nine, if you include the minor layers, See related question.
Your question is unintelligible. There is no "radioactive zone" defined as part of the Sun.
in the sun light zone
The three main parts of the Sun are the core, radiative zone, and convective zone. The core is where nuclear fusion occurs, producing the Sun's energy. The radiative zone is where energy is transported by electromagnetic radiation, and the convective zone is where energy is transported by convection currents.
Actually, you can only see the corona during an eclipse. The correct answer is the Photosphere.
The layer surrounding the core of the sun is the radiative zone. This zone is responsible for transferring energy produced in the core to the outer layers of the sun through the process of radiation.
The core, the radiative zone, and the convective zone.
They are the Convection Zone, Radiative Zone, then the Core.