Which layer of the sun is shown extending into space in the picture above?

corona
radiative zone
convective zone
photosphere

Photosphere

Explanation:

The Photosphere is the luminous surface that delimits the Sun as a star, besides being the coldest layer produces the light that is visible from the Earth.  This surface is composed of a layer of gases that are subjected to strong pressures and its temperature is only (very cold compared to the of its hottest layer).

However, there is anoter layer located  above the Photosphere, the chromosphere; which shines with a reddish color and consists mainly of hydrogen and helium, and some metals in neutral state.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).