Lecture Note
Aston Rule & Packing Fraction
-
University
Princeton University Course
PHY 103 | General Physics IPages
2
Academic year
2023
-
abdulsalam23745
Views
0
# Aston Ryle and packing fraction: X 1919 Aston developed Mass spectrometer to Calculate accurate Atomic masses. Aston observed that Atomic masses are very close to the whole numbers which are actually the mass no. when expressed amy. For A < 20 and A> 180, Atomic masses slightly greater them Mass number A. For 20 LA < 180 ( intermediate nuclei) Atomic masses are slightly smaller than mass number A. This departure is called mass defect by Aston AM = MA- A Atomic-mass Packing fraction f= A AM f = MA-A MA = A I A
f 20 180 A C12 f=o by def. eg. Atomic Mass of H'= 1.0072 amy He 14 = 4.00 amu Li7 = 7.016 amu C12 = 12 amy (by def") N 14 = 14.003 amu 016 = 15.994 (exception) Mg = 23.985 amy f = ve Al 27 26.981 amu Packing fraction is measure of stability $ has rein with binding energy.
Comments
Related Documents
- Questions and Answers - Density
- Elastomers
- Poisson's Ratio
- Strain
- Types of Stress
- Mechanical Properties of Solids
- Motion of Insect in a Rough Bowl
- Turning of Cycle on Frictionless Road
- Maximum Safe Speed on Taking Circular Turn
- Death Wall & Rotor
- Conical Pendulum
- Centripetal and Centrifugal Forces
- Constrained Motion
- Cutting of String
- Questions and Answers - Connected Bodies
- Questions and Answers - Spring Balance & Motion in a Lift
- Questions and Answers - Second Law of Motion
- Questions and Answers - Spring Balance
- Question and Answer - Impulse
- Characteristics of Sound
Aston Rule & Packing Fraction
Please or to post comments