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If electron falls from n=3 to n= 2 , then emitted energy is: (1) 10.2ev (2) 12.09 ev (3) 1.9ev (4)0
what is reverse hyperconjugation? explain with an suitable example....
GROUP 13: ALUMINUM TO THALLIUM The substance aluminum, indium, gallium and thallium have valence electron configurations (ns) 2 (np) 1 and for the lighter elements their chemis
Calculate the combustion energies for the burning of 1 mol of propane and butane. It can be supposed that all reactants and products are obtained under standard conditions.
Write down the chemical equations for the total burning of propane and butane gas in air. Show whether the substances are liquid (l), gaseous (g), or solid (s) under
I have 4 assignments for unit 22 chemistry btec level. Are you able to do my assignments by friday?
How lots of significant figures are in the following measurements? a. 0.002 849 kg b. 40 030 kg Imply rules 1-4 from above. Verify your answers by writing the quantit
The valence electron in the carbon atom are: (1) 0 (2) 2 (3) 4 (4) 6 Ans: 4
what is law of defenit propotion
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