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संबंधित प्रश्न
What do you mean by Atomic number
Give the relative ionizing power of α, β and γ radiations.
Draw a diagram of a simple atom showing the nucleus and electrons. In this atom:
(a) What type of charge will there be on the nucleus?
(b) What is the value of this charge?
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.
Define bound electrons.
How is a cathode ray tube used to convert an electrical signal into a visual signal?
A certain nucleus has a mass number 20 and atomic number 9. Find the number of neutrons and protons present in it.
From α, β and γ-rays, name the one which travels with the speed of light?
A radioctive sample decays `7/8` times its original quantity in 15 minutes. The half-life of the sample is ______.
