Give two difference between nuclear fission and nuclear fusion?

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Question

Give two difference between nuclear fission and nuclear fusion?

Rizwan Ansari · Accepted Answer

Solution:

Nuclear Fission
Nuclear
Fusion

Definition:
Fission is the splitting
of a large atom into two or more smaller ones
Fusion is the fusing of
two or more lighter atoms into a larger one

Natural occurrence of
the process:
Fission reaction does not
normally occur in nature
Fusion occurs in stars,
such as the sun

Byproducts of the
reaction:
Fission produces many
highly radioactive particles
Few radioactive particles
are produced by fusion reaction, but if a fission "trigger" is
used, radioactive particles will result from
that

Conditions:
Critical mass of the
substance and high-speed neutrons are required
High density, high
temperature environment is required

Energy
Requirement:
Takes little energy to
split two atoms in a fission reaction
Extremely high energy is
required to bring two or more protons close enough that nuclear
forces overcome their electrostatic repulsion

Energy
Released:
The energy released by
fission is a million times greater than that released in chemical
reactions; but lower than the energy released by nuclear
fusion
The energy released by
fusion is three to four times greater than the energy released by
fission

	Nuclear Fission	Nuclear Fusion
Definition:	Fission is the splitting of a large atom into two or more smaller ones.	Fusion is the fusing of two or more lighter atoms into a larger one.
Natural occurrence of the process:	Fission reaction does not normally occur in nature.	Fusion occurs in stars, such as the sun.
Byproducts of the reaction:	Fission produces many highly radioactive particles.	Few radioactive particles are produced by fusion reaction, but if a fission "trigger" is used, radioactive particles will result from that.
Conditions:	Critical mass of the substance and high-speed neutrons are required.	High density, high temperature environment is required.
Energy Requirement:	Takes little energy to split two atoms in a fission reaction.	Extremely high energy is required to bring two or more protons close enough that nuclear forces overcome their electrostatic repulsion.
Energy Released:	The energy released by fission is a million times greater than that released in chemical reactions; but lower than the energy released by nuclear fusion.	The energy released by fusion is three to four times greater than the energy released by fission.