Verified Solution • 2025–26 Session moderate

QPages 442-444: Q15: HC Verma: Concepts of Physics - Volume 2 The Nucleus Pages 442-444: Q15 Solution: Lithium Z = 3) has two stable isotopes and . When neutrons are…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often write the reaction without checking that both the mass number (A) and atomic number (Z) balance, mistakenly treating the emitted electron as a free particle rather than a beta‑minus from a neutron‑to‑proton conversion. Always write the products with correct isotopic symbols (e.g., $^6\text{Li}+n\rightarrow ^4\text{He}+^3\text{H}$) and verify that $A_{\text{reactants}}=A_{\text{products}}$ and $Z_{\text{reactants}}=Z_{\text{products}}$.

Lithium Z = 3) has two stable isotopes 6Li^6\text{Li} and 7Li^7\text{Li}. When neutrons are bombarded on lithium sample, electrons and α\alpha-particles are ejected. Write down the nuclear process taking place.

Step-by-Step Verified Solution

**Answer:** _Li + n _ _He + _H; _Li + n _ _He + _He + n. **Step-by-Step Explanation:** When neutrons bombard lithium: - _Li + n _ _He + _H (tritium). - _Li + n _ _He + _He + n. These reactions release alpha particles and other products[citation:2].

All Questions in this Chapter

QPage 440: Q1 QPage 440: Q2 QPage 440: Q3 QPage 440: Q4 QPage 440: Q5 QPage 440: Q6 QPage 440: Q7 QPage 440: Q8 QPage 440: Q9 QPage 440: Q10 QPage 440: Q11 QPage 440: Q12 QPages 440-441: Q1 QPages 440-441: Q2 QPages 440-441: Q3 QPages 440-441: Q4 QPages 440-441: Q5 QPages 440-441: Q6 QPages 440-441: Q7 QPages 440-441: Q8 QPages 440-441: Q9 QPages 440-441: Q10 QPages 440-441: Q11 QPages 440-441: Q12 QPages 440-441: Q13 QPages 440-441: Q14 QPages 440-441: Q15 QPages 440-441: Q16 QPages 440-441: Q17 QPages 440-441: Q18 QPages 440-441: Q19 QPages 441-442: Q1 QPages 441-442: Q2 QPages 441-442: Q3 QPages 441-442: Q4 QPages 441-442: Q5 QPages 441-442: Q6 QPages 441-442: Q7 QPages 441-442: Q8 QPages 441-442: Q9 QPages 441-442: Q10 QPages 442-444: Q1 QPages 442-444: Q2 QPages 442-444: Q3 QPages 442-444: Q4 QPages 442-444: Q5 QPages 442-444: Q6 QPages 442-444: Q7 QPages 442-444: Q8 QPages 442-444: Q9 QPages 442-444: Q10 QPages 442-444: Q11 QPages 442-444: Q12 QPages 442-444: Q13 QPages 442-444: Q14 QPages 442-444: Q15 QPages 442-444: Q16 QPages 442-444: Q17 QPages 442-444: Q18 QPages 442-444: Q19 QPages 442-444: Q20 QPages 442-444: Q21 QPages 442-444: Q22 QPages 442-444: Q23 QPages 442-444: Q24 QPages 442-444: Q25 QPages 442-444: Q26 QPages 442-444: Q27 QPages 442-444: Q28 QPages 442-444: Q29 QPages 442-444: Q30 QPages 442-444: Q31 QPages 442-444: Q32 QPages 442-444: Q33 QPages 442-444: Q34 QPages 442-444: Q35 QPages 442-444: Q36 QPages 442-444: Q37 QPages 442-444: Q38 QPages 442-444: Q39 QPages 442-444: Q40 QPages 442-444: Q41 QPages 442-444: Q42 QPages 442-444: Q43 QPages 442-444: Q44 QPages 442-444: Q45 QPages 442-444: Q46 QPages 442-444: Q47 QPages 442-444: Q48 QPages 442-444: Q49 QPages 442-444: Q50 QPages 442-444: Q51 QPages 442-444: Q52 QPages 442-444: Q53

Related Learning Resources & Exam Preparation

Chapter Practice Bank
Practice all topic-wise questions from The Nucleus
Reference Textbook Solutions
Explore complete chapter exercises for HC Verma: Concepts of Physics - Volume 2
Competitive PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring