Structure Of Atom Flashcards
merits of daltons atomic theory
successfully explained conservation of mass, law of constant composition and multiple proportions but also didnt explain some experiments
what are cathode rays
they start from cathode(-ve) and move to anode, en rays, need low prseeure and high voltage,travel in straight lines,cathode rays do not depend on material of electrode and gase present in the tube
example for cathode ray tube
TV
in j.j thomsons experiment defelction depends on
mass,charge and strength of magnetic and electric field
what is charge to mass ratio of electron
1.7 x 10^11 c/kg
what is charge and mass of electron
1.6x10^(-19) and 9.1x10^(-31) kg
what are canal rays and their properties
the characteristics depend on the gas present in tube,positively charged and different charge to mass ratio depending on the gas inside the tube
who found the netron
chadwick
who made the plum pudding model and feature
jj boi, mass is evenly distributed
what is atomic number(Z) and atomic mass(A)
number of protons in nucleus and number of protons +number of neutrons
what are isotopes
elements with same atomic number but diff mass occurs due to diff number of neutrons
what are isobars
element swith dif atomic mass but same mass number
number of neutrons isotopes of Cl
17,18,20
chemical properties depend on nuetron therefore isotopes show different different chemical properties T/F
False
demerits of rutherford
adopts classical mechanics therefore stability cannot be explained and doesnt explain distribution of electrons and energy
wave neature of light can be explained by
diffraction and interference
intensites of wavelength depends upon
temperature
what is black body
thermal equilibrium with surroundigs emits and absorbs same amount of energy
intensity and wavelength
intensity increases along with wavelegth at a particular temp and then intensity decreases with
energy is absorbed continously T/F
false
example of particle nature of light
photoelectric effect
when white light is passed through a prism which bends the most
violet(shortest wavelength)
what spectrum is rainbow
continous(violet mergges to green and so on)
what is emission spectrum
when energy is supplied to materaial emitted wavelength is recorded
