Answer:
D. in the nucleus
Step-by-step explanation:
Uranium is a natural radioactive chemical element with the chemical symbol "U" and an atomic number of 92. Uranium is used for generating nuclear fuels which are typically used in powering atomic bombs and nuclear reactors in the field of electricity generation.
When ignited, a uranium compound burns with a green flame. The wavelength of the light given off by this flame is greater than that of ultraviolet light which typically ranges from 100nm to 400nm. Where, nm is represents nanometer.
Basically, when ignited, a uranium compound burns with a green flame having a wavelength of 4.30 x 10^-7m to 5 x 10^-7m.
The energy in uranium is used to make electricity in a nuclear power plant.
This energy is stored in the nucleus of uranium and are released through fission because the uranium atom is highly unstable due to its large number of protons. The nucleus is split spontaneously into several smaller nuclei and thus, releasing energy in the process.