To solve the problem, we need to analyze the two statements given about alpha and beta particles and determine their validity and relationship.
### Step-by-Step Solution:
1. **Understanding Ionizing Power**:
- Ionizing power refers to the ability of a particle to ionize atoms in a medium. Alpha particles, being heavier and positively charged, have a greater ionizing power compared to beta particles, which are lighter and negatively charged.
2. **Analyzing the First Statement**:
- The first statement claims that the ionizing power of beta particles is less compared to alpha particles. This is true because alpha particles can cause more ionization due to their larger mass and charge, leading to more collisions with atoms in the medium.
3. **Understanding Penetrating Power**:
- Penetrating power refers to the ability of a particle to pass through materials. Beta particles, being lighter and moving at higher speeds, can penetrate materials more effectively than alpha particles, which are heavier and lose energy quickly upon colliding with matter.
4. **Analyzing the Second Statement**:
- The second statement claims that the mass of beta particles is less than the mass of alpha particles. This is also true, as alpha particles consist of two protons and two neutrons (helium nucleus), while beta particles are essentially electrons (or positrons), which have much less mass.
5. **Evaluating the Relationship Between the Statements**:
- The first statement is true, and the second statement is true. However, the second statement does not serve as a correct explanation for the first statement. The reason for the differences in ionizing and penetrating power is due to the speed and mass of the particles, but the mass comparison alone does not explain the ionizing power difference.
6. **Conclusion**:
- Both statements are true, but the second statement is not a correct explanation for the first statement. Therefore, the correct option would be: "Statement 1 is true, statement 2 is true, but statement 2 is not a correct explanation of statement 1."
### Final Answer:
Both statements are true, but the second statement is not a correct explanation for the first statement.
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