Start Free Mock LoginAlready registered? Login here

Chemistry - Complete d-block Question with Solution | TestHub

ChemistryComplete d-blockd-blockEasy2 minPYQ_2020

ChemistryEasysingle choice

Which one of the following ions has electronic configuration $[A r] 3 d^{6}$ ?
(At. nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)

Options:

Answer:

Solution:

In case of $C o^{+ 3} [A r] 3 d^{6}$ configuration is possible $_{27} C o \to [A r] 3 d^{7} 4 s^{2}$
On removing $3 e^{-}$ we get $C o^{3 +} \to [A r] 3 d^{6}$

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Complete d-blockSubtopic:d-block

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...