Similar principle quantum number, Describe why shielding is more effective ...

Describe why shielding is more effective by electrons in a shell of lower principle quantum number than by electrons having the similar principle quantum number.

Illustrate about nuclear particle, Q. Illustrate about nuclear particle? ...

Q. Illustrate about nuclear particle? In 1932 Rutherford with Chadwick demonstrated the existence of the neutron a nuclear particle having no charge but with nearly the same

Hydrogen-atom, If hydrogen atom is in an energy level represented by n=4,ho...

If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Ans) There is a formula for this i.e  [ (n 2- n 1 +1)

D and f block elements, I read that in the first transition series,the stab...

I read that in the first transition series,the stability of +2 oxidation state decreases from Sc to Cu.but,I observed that as we move along the 3d -series,the stability increases i

Which of the following is not isoelectronic, Which of the following is not ...

Which of the following is not isoelectronic : (1) Na +                 (2) Mg 2+                          (3) O 2-                        (4) Cl - Ans:(d)Cl -

Explain a first order reaction, A first order reaction takes 69.3 minutes f...

A first order reaction takes 69.3 minutes for 50% completion. Set up an equation for determining the time needed for 80% completion of this reaction.

Physical properties of group 3 elements, Explain trend in variation of the ...

Explain trend in variation of the atomic size properties from Boron and Thallium

Potentiometry, principle and application of potentiometry in biochemistry

principle and application of potentiometry in biochemistry

Ionic bond,

Thermodynamics, Calculate the total heat (in J) needed to convert .777 mole...

Calculate the total heat (in J) needed to convert .777 moles of gaseous ethanol at 300 degrees C and 1 atm to liquid ethanol at 25 degrees C and 1 atm. Extra info: b.p. 78.5 degree