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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
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lithium and beryllium markedly differ from other members of their respective groups.
Between a proton and electron in a hydrogen atom = 3.16 x 10 47 A 0
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Atomic radius (r): As we known, the corner atoms do not touch each other. But, each corner atom touches the face centered atoms with the diagonal of the face of the cube as s
Saturated and unsaturated hydrocarbons The compounds of carbon and hydrogen in which carbon atoms are linked to each other by single covalent bonds(C-C) are known as alkanes. T
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