Yall better me the sun creates energy through a series of steps known as: electron-neutron chain reaction nuclear fission proton-electron chain reaction proton-proton chain reaction

- It is choice D. Proton-proton chain reaction.

Explanations:- Nuclear fusion is the reaction that is the source of energy of the Sun. In nuclear fusion, two lighter nuclei(protons) combine in a series to make helium nucleus and lots of heat is released in this process.

As it is the nuclear fusion reaction that involves the chain reaction between protons, it is known as proton-proton chain reaction.

Example:-

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.