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Atomic and Nuclear Physics
The half life of radium is 1600 years. If a sample of radium-226 has an original activity of 200 bq, what will it’s activity be after 4800 years
Atomic and Nuclear Physics
Explain with examples, why;
i) atomic radius increases as you go down the group and decreases as you go across a period?
ii) the main trend for first ionization energy to increase across periods?
iii) the value of first electron affinity of oxygen (-142 kJ/mol) smaller than that of fluorine
(-328 kJ/mol)?
i) atomic radius increases as you go down the group and decreases as you go across a period?
ii) the main trend for first ionization energy to increase across periods?
iii) the value of first electron affinity of oxygen (-142 kJ/mol) smaller than that of fluorine
(-328 kJ/mol)?
Atomic and Nuclear Physics
Magnesium crystallises in the HCP structure with lattice constant a=3.21*10^10 and c/a ratio of 1.624. Determine
(a) The number of core electrons and the number of valence electrons in a Magnesium atom given that it has 12 electrons.
(b) The number density of (conduction) in the magnesium metal.
(a) The number of core electrons and the number of valence electrons in a Magnesium atom given that it has 12 electrons.
(b) The number density of (conduction) in the magnesium metal.
Atomic and Nuclear Physics
Derive the expression for the magnetization of the material with atomic number 26 and mass 55.847g/mole. Hence or otherwise determine the magnetization of 10g of the material (1s, 2s, 2p, 3s, 3p, e. t. c.)
Atomic and Nuclear Physics
The Length of an organ pipe is twice is the length of another closed organ pipe . The fundamental frequency of the open pipe is 100Hz. the frequency of the third harmonic of the closed pipe is?
Atomic and Nuclear Physics
When E =f/A|e/l
Atomic and Nuclear Physics
How the masses on the left and right hand of equation get balanced in positive beta decay. Like P gives neutron and positron.
Atomic and Nuclear Physics
A radioactive material decays to (1/16)th of its inital amount in 2hrs. What is the half life of the sample?
Atomic and Nuclear Physics
A) How do De Broglie’s wavelengths control the orbits that exist in the Bohr model of an atom?
Atomic and Nuclear Physics
the inter planar spacing betwen(100)planes in bcc structure is .232nm.find out the lenghth of the unit cell
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