1.

Among the species: Ce^(4+), Eu^(2+), Tb^(4+), Yb^(2+), Sm^(2+), Tm^(2+), Pr^(4+), Nd^(4+), find the number of ions whichhave sufficient stability to be studied in aqueous chemistry.

Answer»


Solution :`Ce^(4+) rarr (f^(0))`
`Eu^(2+), Tb^(4+) rarr (f^(7))`
`Yb^(2+) rarr (f^(14))`
`sm^(2+) rarr (f^(6))`
`Tm^(2+) rarr (f^(13)`
`PR^(4+) rarr (f^(1))`
`ND^(4+) rarr (f^(2))`


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