D 2.7 x 1ö 21. The mass defect in a nuclear reaction is 0.05 u. What is the energy released? (e = 3.00 x 10* ms, 1u- 1.66 x 10 " kg) A 2.49 x 10-0J B 7.47 x 10-J C 7.65 x 10 J D 8.97 x 10-"J
Radioactive decay
The emission of energy to produce ionizing radiation is known as radioactive decay. Alpha, beta particles, and gamma rays are examples of ionizing radiation that could be released. Radioactive decay happens in radionuclides, which are imbalanced atoms. This periodic table's elements come in a variety of shapes and sizes. Several of these kinds are stable like nitrogen-14, hydrogen-2, and potassium-40, whereas others are not like uranium-238. In nature, one of the most stable phases of an element is usually the most prevalent. Every element, meanwhile, has an unstable state. Unstable variants are radioactive and release ionizing radiation. Certain elements, including uranium, have no stable forms and are constantly radioactive. Radionuclides are elements that release ionizing radiation.
Artificial Radioactivity
The radioactivity can be simply referred to as particle emission from nuclei due to the nuclear instability. There are different types of radiation such as alpha, beta and gamma radiation. Along with these there are different types of decay as well.
![A 1.8 x 10" J
B 2.7 x 10"J
C 1.8 x 10" J
D 2.7 x 10J
21. The mass defect in a nuclear
reaction is 0.05 u. What is
the energy released?
(c = 3.00 x 10° ms',
1u= 1.66 x 10-" kg)
A 2.49 x 10-ºJ
B 7.47 x 10-12J
C 7.65 x 10 1² J
D 8.97 x 10-" J
22. Thorium-228 decays by
emitting an a-particle.
2 Th- 2Ra + a
What is the mass defect of
the decay?
(Mass of 2 Th = 227.97929 u,
mass of 224RA +a=227.97340 u,
1u= 1.66 x 10-7 kg
A 9.78 x 10-30 kg
B 9.78 x 10- kg
C 3.44 x 10" kg
D 3.44 x 10-7 kg
23. The mass defect from the
decay of radium-226 is
8.68 x 10-0 kg. Calculate the
energy released.
(c = 3.00 × 10 m s',
1 eV = 1.60 x 10-" J]
A 1.36 x 10-23 eV
B 7.81 x 10-13 eV
C 1.57 x 10° eV
D 4.71 x 10" eV
24. A nuclear reactor has
undergone a fission reaction.
After several days, it is
found that 0.09% from 1 g of
uranium-235 was changed to
energy. Calculate the energy
released.
(c = 3.00 x 10 m s']
A 2.7 x 10 J
B 2.7 x 10°J
C 8.1 x 10 J
D 8.1 x 10"J
25. In a nuclear reaction, a total
of 4.30 x 10-12 J of energy is
released. What is the mass
defect?
(c = 3.00 x 10° m s-']](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F375ed40a-f296-4054-9a8d-5360f3977b2a%2Ff9f43b5e-3004-4fc1-a222-e007f809d539%2F8bu9mms_processed.jpeg&w=3840&q=75)
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