Nuclear Chemistry and Radioactivity — Flashcards
Maharashtra Board · Class 11 · Chemistry
25 flashcards for Nuclear Chemistry and Radioactivity (Maharashtra Board Class 11 Chemistry) to test yourself on key terms and facts.
Interactive on Super Tutor
Studying Nuclear Chemistry and Radioactivity? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for flashcards and more.
Free trial, no card needed.
What is nuclear chemistry and how does it differ from regular chemistry?
Answer
Nuclear chemistry is the study of reactions involving changes in atomic nuclei. Unlike regular chemistry which involves rearrangement of atoms by breaking and forming chemical bonds, nuclear chemistry…
Write the nuclear notation ᴬ_Z X and explain what A, Z, and N represent.
Answer
ᴬ_Z X represents nuclear notation where: - X = element symbol - Z = atomic number (number of protons) - A = mass number (total number of nucleons = protons + neutrons) - N = number of neutrons = A - Z…
Define and give examples of: isotopes, isobars, isotones, and mirror nuclei.
Answer
• Isotopes: Same Z, different N (²²Na, ²³Na, ²⁴Na) • Isobars: Same A, different Z (¹⁴C, ¹⁴N) • Isotones: Same N, different Z (¹³C, ¹⁴N both have 7 neutrons) • Mirror nuclei: Isobars where proton and n…
What is the significance of even-odd nature of protons and neutrons in nuclear stability?
Answer
Even-even nuclides (both Z and N even) are most stable - 165 naturally occurring nuclides (85% of earth's crust). Even-odd or odd-even are moderately stable - about 105 total. Odd-odd nuclides are lea…
Explain the N/Z ratio trend for nuclear stability across different mass ranges.
Answer
• Light nuclei (A < 40): N/Z ≈ 1 for stability • Medium nuclei (40 < A < 90): N/Z gradually increases, most stable around ⁵⁶Fe • Heavy nuclei (A > 90): N/Z > 1.3, need more neutrons to overcome coulom…
What are magic numbers and why are they significant?
Answer
Magic numbers are 2, 8, 20, 28, 50, 82, and 126. Nuclei with these numbers of protons or neutrons are particularly stable and abundant in nature. Example: ²⁰⁸Pb has both 82 protons and 126 neutrons (d…
Define nuclear binding energy and mass defect. Write the formula connecting them.
Answer
Nuclear binding energy is the energy required to break a nucleus into its constituent nucleons. Mass defect (Δm) is the difference between calculated mass and observed mass of a nucleus. Δm = [Z·mₕ + …
Calculate the binding energy per nucleon for ⁴He. Given: mₕ = 1.0078 u, mₙ = 1.0087 u, mass of ⁴He = 4.0026 u
Answer
For ⁴He: Z = 2, A = 4, N = 2 Δm = [2 × 1.0078 + 2 × 1.0087] - 4.0026 = [2.0156 + 2.0174] - 4.0026 = 4.033 - 4.0026 = 0.0304 u B.E. = 0.0304 × 931.4 = 28.31 MeV Binding energy per nucleon = 28.
+17 more flashcards
Practise AllFrequently Asked Questions
What are the important topics in Nuclear Chemistry and Radioactivity for Maharashtra Board Class 11 Chemistry?
How many flashcards are available for Nuclear Chemistry and Radioactivity?
How should I revise Nuclear Chemistry and Radioactivity for Class 11 exams?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Nuclear Chemistry and Radioactivity
For serious students
Get the full Nuclear Chemistry and Radioactivity chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for Maharashtra Board Class 11 Chemistry. Free to start, no card needed.