Advertisements
Advertisements
प्रश्न
A certain nucleus X has a mass number 15 and atomic number 7. Find the number of neutrons. The nucleus X losses one α-particle and Express the change and write the symbol of the new nucleus.
उत्तर
Mass number = No. of protons + No. of neutrons
Atomic number = No. of protons
∴ No. of neutrons = Mass number - Atomic number
= 15 - 7 = 8
Element X can be written as \[\ce{_7^15X}\].
After the loss of one α-particle, the mass number is decreased by 4 and atomic number is decreased by 2. The element X changes to S.
\[\ce{_7^15X -> _5^11Z + _2^4He}\]
APPEARS IN
संबंधित प्रश्न
State the disadvantages of nuclear energy.
One eV (electron volt) of nuclear energy is equivalent of:
(a) 1.6 × 10−14 J
(b) 1.6 × 10−12 J
(c) 1.6 × 10−19 J
(d) 1.6 × 10−13 J
Give scientific reason:
It is absolutely necessary to control the fission reaction in nuclear power plants.
Distinguish between α, β and γ rays.
What is a.m.u?
What is nuclear waste? What are hazard of nuclear waste to living beings? How is nuclear waste disposed off?
Nuclear power plants in India
Thermal power generation : Air pollution : : Nuclear power generation : _____________
What are the places in which atomic power stations located in Tamil Nadu?
Why is nuclear fission useful to mankind?
