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In which one of the following pairs of experimental observations and phenomenon does the experimental observation correctly account for phenomenon:
(1) X-ray spectra Charge on the nucleus
(2)α -particle scattering Quantized electron orbit
(3)Emission spectra The quantization of energy
(4)The photoelectric effect The nuclear atom
Ans: (c)Emission spectra The quantization of energy
When Nacl is dissolved in water the sodium ion becomes: (1) Oxidized (2) Reduced (3) Hydrolysed (4) Hydr
explain why Cu2+ ion is not stable in aqueous solution?
(a) Describe how you would carry out a series of experiments to determine the molar conductivities (Λ m ) of an electrolyte at various concentrations, starting with the measurement
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Q. Objectives of transition elements of the f-block? After studying this unit you should be able to: distinguish between transition and inner-transition elements, d
Q. Show the Occurrence of the f-block element? Apart from promethium which is unstable and is found in traces in uranium ores, all the lanthanides usually occur together. Altho
The ratio of area covered by second orbital to the first orbital is: (1) 1 : 2 (2) 1 : 16 (3) 8 : 1 (4) 16 : 1 Ans: 16 : 1
Which of the following sets of quantum numbers represent an impossible arrangement: n l m m2 (1) 3 2 - 2 (+)
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