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प्रश्न
What do you mean by Atomic number
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उत्तर
Atomic number is the number of protons present in the nucleus. As number of protons is equal to the number of electrons so atomic number also gives the number of electrons in an atom.
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संबंधित प्रश्न
What is thermionic emission?
A nucleus `""_11^24Na` emits a beta particle to change into Magnesium (Mg)
(i) Write the symbolic equation for the process.
(ii) What are numbers 24 and 11 called?
(iii) What is the general name of `""_12^24Mg `with respect to `""_11^24Na` ?
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Name the Different Radiations Which Are Emitted by the Radioactive Substances.
Are all the radiations mentioned by you, emitted in a single radioactive decay?
A certain nucleus has a mass number 20 and atomic number 9. Find the number of neutrons and protons present in it.
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88Ra226 experiences three α - decay. Find the number of neutrons in the daughter element.
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A radioactive material decays by simultaneous emissions of two particles with half-lives of 1400 years and 700 years respectively. What will be the time after which one-third of the material remains? (Take In3 = 1.1)
A radioactive element is placed in an evacuated chamber. Then the rate of radioactive decay will ______.
