Both nuclear fusion and nuclear fission reactions
release radioactive waste.
involve the splitting of atoms.
are utilized in nuclear power plants.
release large amounts of energy.

Both the nuclear reactions releases large amounts of energy.

Explanation: There are two types of nuclear reactions.

Option 1: Between these two reactions, only nuclear fusion reactions produce radioactive products. Nuclear fission reactions also produce radioactive products but they are short lived and decay accordingly.

Option 2: Only nuclear fission reactions involve the splitting of atoms, nuclear fusion involves the combining of two atoms.

Option 3: In power plants, nuclear fission reactions takes place predominantly.

Option 4: Both the reactions release large amounts of heat as explained in the definition.

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

c. orbital shape i hope this is correct