WBCS.LIVE practice question

Alpha particles emitted from radioactive substances are essentially equivalent to the nucleus of which element?

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

Answer options

  1. Hydrogen
  2. Helium
  3. Lithium
  4. Beryllium

Correct answer and explanation

Correct answer: Helium

Explanation: ✅ Correct Answer: B) Helium 📚 Explanation: During alpha decay, unstable radioactive elements naturally emit alpha particles to become more stable. An alpha particle consists of exactly two protons and two neutrons tightly bound together. This makes it structurally and chemically identical to a positively charged helium nucleus (He²⁺).