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#Question id: 20033


The mass of one mole of electron is

#XL - P Chemistry
  1. 9.1 × 10–28g
  2. 0.55mg 
  3. 9.1 × 10–24g 
  4. 1.008mg

Answer:- Option(s): 2


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#Question id: 19773

#XL - P Chemistry

Bohr’s model of atom is not in agreement with

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#Question id: 19774

#XL - P Chemistry

Which of the following statements is correct?

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#Question id: 19775

#XL - P Chemistry

Which experimental observation correctly account for the phenomenon?
Experimental observation                                 Phenomenon
(A) X-rays spectra                                              Charge on nucleus
(B) alpha -particle scattering                           Quantized electron orbit .
(C) Photoelectric effect                                      The nuclear atom
(D) Emission spectra                                         Quantization of energy.

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#Question id: 19776

#XL - P Chemistry

In the Schrodinger’s wave equation ø represents

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#Question id: 19777

#XL - P Chemistry

Which of the following gave the idea of a nucleus of the atom?

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#Question id: 19778

#XL - P Chemistry

Cathode rays have same charge to mass ratio as

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