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CBSE Class 11-science Answered

why fluroscent material is used in rutherford's experiment of gold foil?
Asked by | 04 Oct, 2008, 03:10: PM
answered-by-expert Expert Answer

Fluroscent material is used in rutherford's experiment of gold foil because that substance is radioactive which can release  particles ,which are required for bombardment of gold foil.

Answered by | 05 Oct, 2008, 08:40: AM
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CBSE 11-science - Chemistry
isotopes
Asked by keerthi | 10 Jan, 2013, 07:38: PM
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Asked by raushan kumar | 29 Dec, 2012, 08:44: PM
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CBSE 11-science - Chemistry
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Asked by raushan kumar | 29 Dec, 2012, 08:40: PM
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CBSE 11-science - Chemistry
A magnesium surface has a work function of 3.68 eV. Electromagnetic waves with a 215 nm wavelength strike the surface and eject photoelectrons. Calculate the energy of the photoelectrons in Joules and in electron volts.
Asked by | 29 Dec, 2012, 07:13: PM
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CBSE 11-science - Chemistry
Hello sir, in 5f orbital n=5 and l=n-1 so n=4 but tat is not the correct answer n=3 is correct, but how?
Asked by | 12 Dec, 2012, 09:19: PM
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CBSE 11-science - Chemistry
Explain schrodinger wave equation and its derivation.
Asked by | 26 Nov, 2012, 07:34: PM
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CBSE 11-science - Chemistry
sir how to classify compounds for ex-CaSo4,HONO2,NO3-etc.on basis of whether they form covalent or ionic bonds?give a simple electronic structure for each?
Asked by Akash Sundi | 19 Nov, 2012, 02:58: PM
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CBSE 11-science - Chemistry
what are the limitations of Bohr's model of an atom?
Asked by | 18 Nov, 2012, 04:23: PM
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CBSE 11-science - Chemistry
which of the following values of energy is not possible to be absorbed or emitted by a body? (A)E=hv (B)E=14hv (C)E=2hv (D)E=1.5hv
Asked by | 13 Nov, 2012, 05:41: AM
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