Advertisements
Advertisements
प्रश्न
What are free electrons?
Advertisements
उत्तर
Electrons revolving in the outermost orbit of an atom which are weakly held by the nucleus are called free electrons
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Why is a cathode ray tube evacuated to a low pressure?
What is thermionic emission?
What is meant by radioactivity?
A nucleus is \[\ce{^24_11 Na}\] β-radioactive.
Write the equation represent β-decay.
State two characteristics of the substance used as thermionic emitter.
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
State any two uses of cathode rays.
What is meant by Radioactivity?
Are all the radiations viz. α, β and γ emitted in a single radioactive decay?
Heavy radioactive elements eventually turn into ______.
