Question Video: Ranking Types of Radiation in Descending Order According to Their Penetrating Power | Nagwa Question Video: Ranking Types of Radiation in Descending Order According to Their Penetrating Power | Nagwa

Question Video: Ranking Types of Radiation in Descending Order According to Their Penetrating Power Chemistry • First Year of Secondary School

Which of the following is the correct descending order of different types of radiation according to their penetration power? [A] 𝛼 particles, 𝛽 particles, 𝛾 rays [B] 𝛼 particles, 𝛾 rays, 𝛽 particles [C] 𝛽 particles, 𝛼 particles, 𝛾 rays [D] 𝛾 rays, 𝛼 particles, 𝛽 particles [E] 𝛾 rays, 𝛽 particles, 𝛼 particles

02:14

Video Transcript

Which of the following is the correct descending order of different types of radiation according to their penetration power? (A) 𝛼 particles, 𝛽 particles, 𝛾 rays. (B) 𝛼 particles, 𝛾 rays, 𝛽 particles. (C) 𝛽 particles, 𝛼 particles, 𝛾 rays. (D) 𝛾 rays, 𝛼 particles, 𝛽 particles. (E) 𝛾 rays, 𝛽 particles, 𝛼 particles.

In this question, we are asked to compare and order different types of radiation according to their penetration power. If we look at the answer choices, the types of radiation listed include 𝛼 particles, 𝛽 particles, and 𝛾 rays. The different particles and the 𝛾 rays all have different penetrating abilities, which is related in part to their size.

𝛼 particles are large and consist of two protons and two neutrons. As 𝛼 particles are large, they have low penetrating ability and can be stopped by a piece of paper. 𝛽 particles are high-energy electrons or positrons. 𝛽 particles travel much faster than 𝛼 particles and are significantly smaller. They can pass through a piece of paper but are stopped by a thin sheet of aluminum. 𝛾 rays, or 𝛾 radiation, are high-frequency electromagnetic waves that travel at the speed of light. 𝛾 rays do not have mass and can pass through most materials. It requires a few centimeters of lead or over a meter of concrete to stop 𝛾 rays.

If we now order these types of radiation in descending order from greatest penetration power to least, we get 𝛾 rays followed by 𝛽 particles followed by 𝛼 particles. In conclusion, the answer choice that lists the different types of radiation in descending order according to their penetration power is answer choice (E) 𝛾 rays, 𝛽 particles, 𝛼 particles.

Join Nagwa Classes

Attend live sessions on Nagwa Classes to boost your learning with guidance and advice from an expert teacher!

  • Interactive Sessions
  • Chat & Messaging
  • Realistic Exam Questions

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy