Advertisements
Advertisements
प्रश्न
An element `""_ZS^A` decays to `""_85R^222` after emitting 2 α particles and 1 β particle.
Find the atomic number and atomic mass of the element S.
Advertisements
उत्तर
`""_ZS^A -> ""_85R^222 + 2(""_2^4He) + 1 ""_"-1"^0e`
A = 222 + 2(4) + 0
∴ A = 230
Z = 85 + 2(2) + (-1)
∴ Z = 88
APPEARS IN
संबंधित प्रश्न
Arrange α, β, and γ rays in ascending order with respect to their
1) Penetrating power.
2) Ionising power
3) Biological effect
Write one use of cathode ray tube.
Under which conditions does the nucleus of an atom tend to radioactive?
In a cathode ray tube state:
(i) the purpose of covering cathode by thorium and carbon.
(ii) the purpose of the fluorescent screen.
(iii) how is it possible to increase the rate of emission of electrons.
An element P disintegrates by α - -emission and the new element suffers two further disintegrations, both by β -emission, to form an element Q. Explain the fact that P and Q are the isotopes.
State two properties that a substance should possess when used as a thermionic emitter.
Name the three main parts of a Cathode Ray Tube.
Are all the radiations viz. α, β and γ emitted in a single radioactive decay?
