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Electronic configuration of H - is : (1) 1s 0 (2) 1s 1 (3)1s 2 (d) 1s 1 , 2s 1 Ans: 1s 2
Which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon Ans) We know the energy of electron goes on to become more negative as it reache
1. Define or explain the following terms: a. Science b. Experimentation c. Scientific method d. Hypothesis e. Theory f. Scientific law g. Chemistry h.
If you were to combine 120.0 mL of 0.100 M HCL with 3.25 grams of calcium metal, how many grams of hydrogen gas would you make?
4 NH3 + 5 O2 --> 4 NO + 6 H2O How many grams of NO are actually produced when 60.02 grams of ammonia are allowed to react with 96.00 grams of oxygen? ((This is a limiting reactant
What is a salt bridge? Salt bridge is a device used to link two electrodes on electrochemical cell. It maintains electrical neutrality and internal continuity. It is shown by
Uses of Nitro alkanes or Nitroparaffins (1) Nitro alkanes are used as solvents for polar substances such as cellulose acetate, synthetic rubber etc. (2) Nitro alkanes are us
Which sample is better to use, bigger sample or smaller sample?
if the electon in hydrogen atom is exited to n=5 the number of diffrent frequency of radiations which may be exited is
Which of the sub-shell is circular: (1) 4s (2) 4f (3) 4p (4) 4d Ans: 4s
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