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प्रश्न
Define free electrons.
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उत्तर
Electrons in outer orbits are weakly bound with the nucleus. In solids these weakly bound electrons leave their individual atom and become a part of it. These electrons are known as free electrons.
संबंधित प्रश्न
Why do Free electrons not leave the metal surface on their own
What happens to the atomic number of element when (i) An α -particle, (ii) A β -particle 1 and (iii) γ-radiation is emitted?
State three safety precautions that you would take while handling the radioactive substances.
How is a cathode ray tube used to convert an electrical signal into a visual signal?
What are ‘Becquerel rays’?
State three common properties of beta rays and cathode rays.
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.
In the following atoms, which one is a radioisotope? Give one use of this isotope.
O16, C14, N14, He4
