Which of the following transition metal catios have noble gas core?
(a) `Sc^(3+)` (b) `Y^(3+)`
(c) `La^(3+)` (d) `Ac^(3+)`

Which of the following is not a member of 3d-transition series ?

Which of the following halides cannot be hydrolyzed ? (A) NCl_(3) (B) NF_(3) (C) PCl_(3) (D) BiCl_(3)

Which of the following pairs are isoelectronic ? K^(+),Sc^(3+)

Which of the following halides cannot be hydrolyzed? (A) NCl_(3) (B) NF_(3) (c) PCl_(3) (D) BiCl_(3)

Which of the following is strongest base? (A) \(Sc(OH)_{3}\) (B) \(La(OH)_{3}\) (c) \(Lu(OH)_{3}\) (D) \(Yb(OH)_{3}\)

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)

Name the first element of the 3d transition metal series.