Which of the following shows maximum penetration?
Correct answer: D. Neutrons
- A. Electrons
- B. Protons
- C. Alpha particles
- D. Neutrons
Explanation
α-particles consist of 2 protons and 2 neutrons, which have 4 times higher mass than neutrons, and thus low penetration power. Beta particles are much smaller and more penetrating than alpha particles, but their range in tissue is still limited.Due to their large mass and being chargeless in nature, neutrons have high kinetic energy and thus, high penetration power.
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Analytical chemistry identifies and measures substances using separation and instrumental methods. Chromatography is studied through stationary and mobile phases, retention and Rf values, while spectroscopy connects absorption of electromagnetic radiation with molecular structure and supports qualitative and quantitative analysis through techniques such as UV-visible and infrared spectroscopy.
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