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The statements:(1) In filling a group of orbitals of equal energy, it is energetically preferable to assign electrons to empty orbitals rather than pair them into a particular orbital.(2) When two electrons are placed in two different orbitals, energy is lower if the spins are parallel.are valid for
(1) Aufbau principle
(2) Hund's rule
(3) Pauli's exclusion principle
(4) Uncertainty principle
Ans: Hund's rule
Water at 150 kPa is contained in a 300 L tank.At this state (state 1), 95% of the volume isoccupied by saturated vapour. Heat is transferred to the water thereby raising itspressur
why is soda lime used instead of plain NaOH in preparation of methane?( for class 10)
I WANT TO DISCUSS ABOUT IRON CHEMICAL ANALYSIS.POSSIBLE THAT?.
Dielectric loss: These losses occur because of electrons hopping from single lattice site to another in transition metal oxides.
why HOH is not harmful to our body but Phenol is?
Q. Determine the Number of neutrons? Isotopes of an element can as well be specified by writing the mass number of the isotope following a hyphen after the name of the element.
Which of the following is not isoelectronic : (1) Na + (2) Mg 2+ (3) O 2- (4) Cl - Ans:(d)Cl -
Safety in Preparation of Preparation of trimethyl: 1 Use a round-bottomed flask equipped with a Claisen head (lagged with glass-wool), Quickfit thermometer (very expensive!)
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