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18 Questions

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Radioactivity and Nuclear Stability

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Questions and Answers

Which of the following is NOT a type of radioactive decay mentioned in the text?

Neutron decay (correct)

Alpha decay

Gamma decay

Beta decay

What is the general notation of alpha decay as mentioned in the text?

AZX → AZX + 42He

AZX → A-4 Z-2Y + 42He (correct)

AZX → AZX-4 + 42He

AZX → A+4 ZX+4 + 42He

What is the reason why ingestion of a substance that undergoes alpha decay is harmful?

The alpha particles can damage internal tissues very easily due to their low energy.

The alpha particles can damage internal tissues very easily due to their short range. (correct)

The alpha particles can damage internal tissues very easily due to their high energy.

The alpha particles can damage internal tissues very easily due to their long range.

What is the name of the scientist who used alpha decay to study the interior of the atom?

Ernest Rutherford Signup and view all the answers

What is the type of radiation emitted by radium during its decay process?

Alpha radiation Signup and view all the answers

What is the classification of radioactive decay particles based on?

Their penetration through material Signup and view all the answers

What is the fundamental principle considered in the advanced or complete atomic model?

No two electrons have the same four quantum numbers Signup and view all the answers

What is the expression for the total energy of the Rutherford atom?

ET = Ek + Ep = -Ze2 / 8πεo r Signup and view all the answers

According to Neil Bohr, what is the dependence of the total energy of an atom?

Orbit dependent Signup and view all the answers

What is the expression for the energy quantization of an atom?

ΔE = hf = hc / λ Signup and view all the answers

What is the process by which the nucleus of an atom seeks stability?

Intra nuclear spontaneous transformation Signup and view all the answers

What is the characteristic of the spectral lines observed during the transmission of electrons from one orbit to another?

Line spectrum Signup and view all the answers

What happens when an atom has too many protons or neutrons in its nucleus?

It undergoes beta decay Signup and view all the answers

What is released in negative beta decay?

A negatively charged beta particle and an antineutrino Signup and view all the answers

What is the purpose of releasing a neutrino and an antineutrino in beta decay?

To conserve energy during the decay process Signup and view all the answers