Advertisements
Advertisements
प्रश्न
उत्तर
Atom consists of three elementary particles, neutrons, protons and electrons. Neutron and protons form the central part of atom called nucleus where electrons revolve around this central part in orbits called electronic orbits.
APPEARS IN
संबंधित प्रश्न
What do you mean by Atomic mass
What are the uses of radioactive isotopes in following?
(a) Medical field,
(b) Agriculture,
(c) Industries?
What do you mean by electron emission?
In a cathode ray tube state. How is it possible to increase the rate of emission of electrons.
A certain nucleus has a mass number 20 and atomic number 9. Find the number of neutrons and protons present in it.
An electrons emitter must have how much work function and melting point.
Two radioactive nuclei are represented by xAp and yAq and when p and q are mass numbers and x, y are the atomic number. How can the products be represented, i .e., what are the new values of p, q. x and y after the emission of an α-particle and a β-particle from A and B respectively.
Which part of the atom undergoes a change in the process of radioactive decay?
If 10% of a radioactive substance decays in every 5 years, then the percentage of the substance that will have decayed in 20 years will be ______.
Two radioactive materials A and B have decay constants 25λ and 16λ respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of B to that of A will be "e" after a time `1/("a"lambda)` The value of a ______.
