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प्रश्न
What is a.m.u?
उत्तर
The mass of atomic particles is expressed in terms of atomic mass unit (a.m.u.).
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संबंधित प्रश्न
State the disadvantages of nuclear energy.
A nuclear reaction is represented by the following equation:
`""_92^235U+_0^1n-> _56^139Ba+_36^94Kr+xc+E`
What does E represent?
One isotopes of uranium has a mass number of 235 and atomic number 92.
(a) What is the number of electrons in a neutral atom of this isotope?
(b) How many protons are there in the nucleus of this isotope?
(c) For another isotope of Uranium state which one of the numbers (238 or 92) changes?
(d) What is the number of protons in 238U?
The isotope of 92U235 decays by alpha emission to an isotope of Thorium (Th). The Thorium isotope decays by beta emission to an isotope of Protactaminum (Pa). Write down the equations to represent these two nuclear changes.
How does the position of an element change in the periodic table when it emits out an alpha particle?
What is the effect on the atomic mass and the atomic number of a radioactive element, after the emission of an α-particle?
What happens to the atomic number of an element when it emit a beta particle.
An element 92U238 losses one alpha particle, and then one β-particle and then again one β- particle to get the final nucleus bQa.
(i) Write down the values of a and b.
(ii) State the relationship between the nuclei P and Q.
What is nuclear waste? What are hazard of nuclear waste to living beings? How is nuclear waste disposed off?
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