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its great......................
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thats a good job............
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they r great . thanx a lot..............................
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thanx a lot.................
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7Q)The surface at which the probability of finding an electron is almost zero .This is called RADIAL NODE
Radial nodes r given as (n-l-1)
for example for 3s,they r
(3-0-1)=2
for 3p
(3-1-1)=1
for 3d
(3-2-1)=0
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4Q)All reacting molicules shall have to collide for any reaction to occur
The colliding molecules shall to possess a minimum energy to give products . This minimum energy is called THRESHOLD energy
This is higher than that of molecules in normal state
i am sure of it but please excuse me if its wrong
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i can answer only few Q
8Q)The plane where the probability of finding electron is zero is called Nodal plane
2Q) On the bases of ideas of dual nature of light L.DE BROGLIE proposed that all micro particals including the electron with high velocity r accociated with wavve nature
there fore all micro particals such as electrons,protons,atoms n even molecules moving with high speed r concidered to possses both partical nature n dual nature
Accor to Planks Quantum theory of radiation , the energy
(E) of a photon is= to hv (new)
E=hv or E=h x c/lamida
but Einsteins mass - energy equivalance
E=mc2
from both eq
hc/lamida = mc2
lamida= hc/mc2 =h/mc = h/p
(p=mc=momentum)
The above equation is applicable to photons n micro particals moving with high speed
There fore de.Broglie equation lamida=h/mv
m = mass of micro partical
v = velocity of micro partical
now let us conider the case of an electron moving with same velocity 2 x 10^5 cms sec-1 in an orbit
The wave length is calculated as
lamida= h/mv
= 6.6256 x 10^-34 /9.1x10^-31 x2 x10^3
=4x10^-7
This wavelength associated with electron in motion with high speed in an orbit can be ignored . Hence its wave nature is significance
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great.....................
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