In stars helium atoms are used with hydrogen atoms in order to produce energy.
Answer: A )
Answer and Explanation
The isomer picked is the N-Propylamine.
It has a lone pair of electron available on the electron rich Nitrogen and no formal charge.
Since it will be hard to draw the Lewis structure in this answer format, I'll attach a picture of the Lewis structure to this answer.
The lone pair of electron is shown by the two dots on the Nitrogen atom.
2K + Cl₂ ⇒ 2KCl
2Ca + O₂ ⇒ 2CaO
I suppose that the answer is A