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
When does the nucleus of an atom tend to become radioactive?
A nucleus of an element X which has the symbol `""_84^202` X emits an alpha particle and then a beta particle. The final nucleus is `""_"b"^"a"` Y Find a and b.
What is nucleus of an atom? Compare its size with that of the atom. Name its constitutents. How is the number of these constituents determined by the atomic number its atomic model.
What do you mean by electron emission?
In a cathode ray tube state the purpose of covering cathode by thorium and carbon.
Justify with reason, whether the following nuclear reactions are allowed or not.
\[\ce{^A_Z X -> ^A_{Z + 1}Y + ^0_{-1}β}\]
An electrons emitter must have how much work function and melting point.
State three common properties of beta rays and cathode rays.
From α, β and γ-rays, name the one which is not affected by electric or magnetic field?
