Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AIIMS 201827 May
Exam
AIIMS
Year
2018
Date
27 May
Subject
Chemistry
Chapter
d and f Block Elements

AIIMS 2018 · 27 May · Chemistry · d and f Block Elements

In which of the following elements number of d -electrons is zero...

In which of the following elements number of dd-electrons is zero in 6d6 d-orbital?

Options

  1. ATh
  2. BCm\mathrm{Cm}
  3. CLr
  4. DAm

Correct answer

D. Am

Step-by-step solution

 : Th: [Rn]6d27s2Cm:[Rn]5f76d17s2Lr:[Rn]5f146d17s2Am:[Rn]5f77s2\begin{aligned} & \text{ : Th: }[\mathrm{Rn}] 6 d^2 7 s^2 \\ & \mathrm{Cm}:[\mathrm{Rn}] 5 f^7 6 d^1 7 s^2 \\ & \mathrm{Lr}:[\mathrm{Rn}] 5 f^{14} 6 d^1 7 s^2 \\ & \mathrm{Am}:[\mathrm{Rn}] 5 f^7 7 s^2\end{aligned}
Practice d and f Block Elements on Quantrex Academy →

More from d and f Block Elements

Although +3 oxidation state is most common in lanthanoids, cerium still shows +4… NEET 2026The lanthanide ion having four unpaired electrons is (Given : Atomic numbers of Ce =58… NEET 2026The green paramagnetic species formed by heating KMnO _4 at 513 K is NEET 2026The calculated 'spin-only' magnetic moment of Ti^ 2+ \ (3d^2) is : NEET 2026Match List I with List II : List I (Transition metal/compound/complex) List II (Catalytic… NEET 2026Given below are two statements : One is labelled as Assertion A and the other is labelled… NEET 2026Given below are two statements : Statement I : Ferromagnetism is considered as an extreme… NEET 2025Which of the following set of ions act as oxidising agents? NEET 2024 Full d and f Block Elements list All AIIMS PYQs