Structure of Atom — Flashcards
Maharashtra Board · Class 11 · Chemistry
20 flashcards for Structure of Atom (Maharashtra Board Class 11 Chemistry) to test yourself on key terms and facts.
Interactive on Super Tutor
Studying Structure of Atom? 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 are the three fundamental subatomic particles and their properties?
Answer
1. Electron (e⁻): Negative charge (-1.602 × 10⁻¹⁹ C), mass = 9.109 × 10⁻³¹ kg, located in extranuclear region 2. Proton (p): Positive charge (+1.602 × 10⁻¹⁹ C), mass = 1.673 × 10⁻²⁷ kg, located in nuc…
Define atomic number (Z) and mass number (A). What is their relationship with neutron number (N)?
Answer
Atomic number (Z) = Number of protons = Number of electrons in a neutral atom Mass number (A) = Total number of nucleons (protons + neutrons) Relationship: A = Z + N Therefore: N = A - Z Example: F…
Distinguish between isotopes, isobars, and isotones with examples.
Answer
ISOTOPES: Same atomic number (Z), different mass number (A) Example: ¹²C₆, ¹³C₆, ¹⁴C₆ - all have 6 protons but different neutrons ISOBARS: Different atomic number (Z), same mass number (A) Example: ¹…
Calculate the average atomic mass of chlorine if ³⁵Cl and ³⁷Cl exist in 3:1 ratio.
Answer
Given: ³⁵Cl : ³⁷Cl = 3:1 Out of 4 chlorine atoms: - 3 atoms have mass 35 - 1 atom has mass 37 Average atomic mass = (3 × 35 + 1 × 37) / 4 = (105 + 37) / 4 = 142 / 4 = 35.5 u Therefore, average atom…
What are the key drawbacks of Rutherford's atomic model?
Answer
1. INSTABILITY PROBLEM: According to electromagnetic theory, revolving electrons should emit energy continuously and spiral into the nucleus, making atoms unstable (but real atoms are stable) 2. NO E…
State the relationship between wavelength (λ), frequency (ν), and speed of light (c). Calculate frequency of red light with λ = 750 nm.
Answer
RELATIONSHIP: c = νλ Therefore: ν = c/λ Where: c = 3.0 × 10⁸ m/s (speed of light) λ = wavelength ν = frequency CALCULATION: For red light: λ = 750 nm = 750 × 10⁻⁹ m ν = c/λ = (3.0 × 10⁸)/(750 × 10⁻…
State Planck's quantum theory and Einstein's photoelectric equation.
Answer
PLANCK'S QUANTUM THEORY: E = hν Where: E = energy of one quantum (photon) h = Planck's constant = 6.626 × 10⁻³⁴ J·s ν = frequency of radiation EINSTEIN'S PHOTOELECTRIC EQUATION: hν = W₀ + ½mv² Where:…
What is the Rydberg equation for hydrogen spectrum? Name the five spectral series.
Answer
RYDBERG EQUATION: ν̄ = RH[1/n₁² - 1/n₂²] cm⁻¹ Where: RH = 109,677 cm⁻¹ (Rydberg constant) n₁ = 1,2,3... (final orbit) n₂ = (n₁+1), (n₁+2)... (initial orbit) FIVE SPECTRAL SERIES: 1. Lyman (n₁=1): UV…
+12 more flashcards
Practise AllFrequently Asked Questions
What are the important topics in Structure of Atom for Maharashtra Board Class 11 Chemistry?
How many flashcards are available for Structure of Atom?
How should I revise Structure of Atom 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 Structure of Atom
For serious students
Get the full Structure of Atom 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.