P block elements, Chemistry

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Is liquid ammonia is solvent?

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All electrons on the 4p  sub-shell must be characterized by the quantum number(s): (1)  n=4, m= 0, s= ± 1/2                (2) l=1    (3)  l=0, s= ± 1/2

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why are salts of alkali metals diamagnetic

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Which of the following sets of quantum numbers is correct for an electron in 4f orbital: (1) n-=4, l=3. m+1, s= +1/2              (2) n-=4, l=4. m-4, s= -1/2

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