WBCS.LIVE practice question

The ‘α’ – particle is/are:

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. high energy electrons
  2. positively charged hydrogen ions
  3. high energy x – ray radiations
  4. double positively charges helium nuclei

Correct answer and explanation

Correct answer: double positively charges helium nuclei

Explanation: ✅ Correct Answer: D) double positively charges helium nuclei 📚 Explanation: An alpha ($\alpha$) particle is a high-energy particle emitted during certain types of radioactive decay. It consists of two protons and two neutrons, making it identical to a double-positively charged helium nucleus ($\text{He}^{2+}$). It possesses a mass number of 4 and an electrical charge of $+2$. Because of its large mass relative to other radiations, it has a high ionizing capability but low penetrating power.