Advertisements
Advertisements
प्रश्न
Complete the following radioactive reaction:
\[\ce{^-_-X -> ^-_-Y + ^4_2He -> ^234_91Z + ^0_-1e}\]
Advertisements
उत्तर
\[\ce{^\underline{238}_\underline{92}X -> ^\underline{234}_\underline{90}Y + ^4_2He -> ^234_91Z + ^0_-1e}\]
APPEARS IN
संबंधित प्रश्न
Why is a cathode ray tube evacuated to a low pressure?
What happens to the mass number of an element when (i) an α -particle, (ii) a β -particle, and (iii) γ -radiation is emitted?
Define the term radioactivity.
Radioactive substances were found to give off three types of rays. Name them. How do they
(a) React to the magnetic field?
(b) React to the electric field?
(c) Act when different thickness of lead sheets is placed in their path?
A certain nucleus A (mass number 238 and atomic number 92) is radioactive and becomes a nucleus B (mass number 234 and atomic number 90) by the loss of one particle.
What particle was emitted?
Define free electrons.
What do you understand by the term radioactivity?
Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.
