WBCS.LIVE practice question

Which law explains that an alpha decay decreases the atomic number by 2 and mass number by 4?

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

Answer options

  1. Avogadro’s Law
  2. Law of Conservation of Mass
  3. Soddy-Fajans Displacement Law
  4. Boyle’s Law

Correct answer and explanation

Correct answer: Soddy-Fajans Displacement Law