Which statement best describes the process of nuclear fusion?
a. smaller nuclei combine to make a larger nucleus.
b. a large nucleus is broken down into free protons and neutrons.
c. hydrogen atoms bond together to make molecular hydrogen.
d. hydrogen and helium gas are burned to produce heat and electricity.

a. Smaller nuclei combine to make a larger nucleus.

Explanation:

Nuclear fusion is the process by which several atomic nuclei of similar charge bind and form a heavier nucleus.

In order for fusion to occur, an important energy barrier produced by electrostatic force must be overcome. Over long distances, two nuclei repel each other due to the electrostatic repulsion force between their protons, positively charged. However, if two nuclei can be approached sufficiently, due to the strong nuclear interaction, which is greater over short distances, electrostatic repulsion can be overcome, and fusion takes place.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

indium, and thallium have three electrons i think