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An electron has kinetic energy 2.8 x 10 -23J . de-Broglie wavelength will be nearly:
(me: 9.1 x 10 -31 kg)
(1) 9.28x 10-4m
(2) 9.28 x10-7 m
(3) 9.28 x 10 -8m
(4) 9.28x 10 -10 m
Ans:(c) 9.28 x 10 -8m
The energy of electron in hydrogen atom in its grounds state is -13.6 eV. The energy of the level corresponding to the quantum number equal to 5 is: (1) -0.54 eV (2)
Two solutions are prepared using the same solute: Solution A: 0.27g of the solute dissolves in 27.4g of t-butanol. Solution B: 0.23g of the solute dissolves in 24.8g cyclohexane. W
how to get the electron configuration
Semisynthetic polymers These polymers are mainly derived from naturally taking place polymers by chemical changes. Since cellulose is naturally taking place polymers, cellulose
Which of the following is least soluble: (1) BeF 2 (2) NaBr (3) CaF 2 (4
what is chemical properties of p block elements
Question: a) If you were a newly appointed environmental engineer in a wastewater treatment plant and one of your tasks was to characterise the wastewater. According to you,
scale and sludge formation
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how to determine the percentage of association or dissociation in a solution?
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