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Explain the term artificial radio telescope?
The radioactive nuclei having some atomic number but different mass number are called radioactive isotopes.
The radioactive nuclei having some atomic number but different mass number are called radioactive isotopes.
See lessWhat is radio carbon dating?
The estimation of age by isotope of carbon i.e. 14C is called carbon dating.
The estimation of age by isotope of carbon i.e. 14C is called carbon dating.
See lessElectron Capture is common in case of heavy nucleus, why?
A heavy nucleus has large positive charge. Also the radius of K-shell in heavy nuclei much smaller than that of lighter nuclei. Due to both these factors, the K-shell electron possesses large attractive force due to positive charge on the nucleus and hence the electron is captured by it.
A heavy nucleus has large positive charge. Also the radius of K-shell in heavy nuclei much smaller than that of lighter nuclei. Due to both these factors, the K-shell electron possesses large attractive force due to positive charge on the nucleus and hence the electron is captured by it.
See lessWhat do you mean by curie?
Curie is the unit of radioactivity. It is denoted by Ci.
Curie is the unit of radioactivity. It is denoted by Ci.
See lessAll elements found in nature are not radioactive. Why is this property found in heavy elements only?
All elements found in nature are not radioactive. Only the heavy elements are radioactive. It is due to the large number of protons in the nucleus of heavy elements, the electrical repulsive forces also become effective which cause to radioactive disintegration.
All elements found in nature are not radioactive. Only the heavy elements are radioactive. It is due to the large number of protons in the nucleus of heavy elements, the electrical repulsive forces also become effective which cause to radioactive disintegration.
See lessWhen a nucleus emits a gamma ray photon, what happen to the nucleus?
When an excited atom goes to the lower energy, then a gamma ray can be emitted. During this emission atomic number and mass number remain unchanged but their energy level is changed. The actual mass decreases in proportion to the energy lost.
When an excited atom goes to the lower energy, then a gamma ray can be emitted. During this emission atomic number and mass number remain unchanged but their energy level is changed. The actual mass decreases in proportion to the energy lost.
See lessCan a single nucleus at a time emit a-particle, B-particle and gamma ray?
No, a nucleus either emits α-particle or β-particle at a time, but not together. If the nucleus is left in the excited state after the emission of a α-particle or β-particle, it may emit radiation called γ-ray. Thus, α-particle, β-particle and γ-ray are not emitted together.
No, a nucleus either emits α-particle or β-particle at a time, but not together. If the nucleus is left in the excited state after the emission of a α-particle or β-particle, it may emit radiation called γ-ray. Thus, α-particle, β-particle and γ-ray are not emitted together.
See lessDoes the activity of a radioactive element depend on its mass?
The activity is the rate of disintegration of the radioactive element. It is proportional to the number of undecayed atoms. Since, the number of atoms depends on the mass; therefore, the activity depends on the mass of the element.
The activity is the rate of disintegration of the radioactive element. It is proportional to the number of undecayed atoms. Since, the number of atoms depends on the mass; therefore, the activity depends on the mass of the element.
See lessWhy is the phenomenon of natural radioactivity generally found in elements of high atomic number?
The binding energy per nucleon of the elements having high atomic number is very small. Due to this small value of binding energy per nucleon the element can hold a large number of nucleon together. Therefore, the elements emits radiation producing natural radioactivity.
The binding energy per nucleon of the elements having high atomic number is very small. Due to this small value of binding energy per nucleon the element can hold a large number of nucleon together. Therefore, the elements emits radiation producing natural radioactivity.
See lessWhat do you mean by radioactive elements?
The elements which exhibit radioactivity are called radioactive particles. Such elements emit radioactive radiation in the form of α-particles,β-particles and γ-particles.
The elements which exhibit radioactivity are called radioactive particles. Such elements emit radioactive radiation in the form of α-particles,β-particles and γ-particles.
See less