Which of the followig lanthanoid ions are coloured (a). `Lu^(+3)` (b). `Pm^(+3)` (c). `Sm^(+3)` (d). `Eu^(+3)`

Which of the following system is coloured in lanthanoide ions?

Which of the following is a proper fraction? (a) 3/5 (b) 5/3 (c) 1 2/3 (d) None of these

Which of the following is a proper fraction? (a) 3/5 (b) 5/3 (c) 1 2/3 (d) None of these

Which of the following cannot be the probability of an event? 1/3 (b) 3/5 (c) 5/3 (d) 1

Which of the following numbers is not equal to (-8)/(27)?\ (a) (2/3)^(-3) (b) (2/3)^3 (c) (-2/3)^3 (d) ((-2)/3)*((-2)/3)*((-2)/3)

Which of the following lanthanoid ions is diamagnetic? (Atomic number of Ce=58,Sm=62,Eu=63,Yb=70 ]

Out of following which is more than basic Lu(OH)_(3) and Ce(OH)_(3) .

Which of the following pairs of ions have the same electronic configuration A) Cr^(+3),Fe^(+3) B) Fe^(+3),Mn^(+2) C) Fe^(+3),Co^(+3) D) Sc^(+3),Cr^(+3)

Which of the following pairs of ions have the same electronic configuration A) Cr^(+3),Fe^(+3) B) Fe^(+3),Mn^(+2) C) Fe^(+3),Co^(+3) D) Sc^(+3),Cr^(+3)

In which of the following paris both the ions are coloured in aqueous solution? (Atomic number, Sc - 21, Ti = 22, Ni = 28, Cu = 29, Co = 27) (a) Ni^(2+), Ti^(3+) (b) Sc^(3+),Ti^(3+) (c) Sc^(3+),Co^(2+) (d) Ni^(2+),Cu^(+)