Chemistry - f-block Question with Solution | TestHub
Chemistryf-blockf-blockMedium2 minQB
ChemistryMediumnumerical
Find the number pair of ions that have the same outermost E.C.
Set I: (Ac³⁺, Th⁴⁺), (Th³⁺, Pa⁴⁺), (Pa³⁺, U⁴⁺), (U³⁺, Np⁴⁺), (Np³⁺, Pu⁴⁺), (Pu³⁺, Am⁴⁺), (Am³⁺, Cm⁴⁺), (Cm³⁺, Bk⁴⁺), (Bk³⁺, Cf⁴⁺), (Cf³⁺, Es⁴⁺), (Es³⁺, Fm⁴⁺), (Fm³⁺, Md⁴⁺), (Md³⁺, No⁴⁺), (No³⁺, Lr⁴⁺)
Set II: (La²⁺, Ce³⁺), (Ce²⁺, Pr³⁺), (Pr²⁺, Nd³⁺), (Nd²⁺, Pm³⁺), (Pm²⁺, Sm³⁺), (Sm²⁺, Eu³⁺), (Eu²⁺, Gd³⁺), (Gd²⁺, Tb³⁺), (Tb²⁺, Dy³⁺), (Dy²⁺, Ho³⁺), (Ho²⁺, Er³⁺), (Er²⁺, Tm³⁺), (Tm²⁺, Yb³⁺), (Yb²⁺, Lu³⁺)
If the value of Set I is 'x' and Set II is 'y', then find .
Answer:
2.00
Solution:
,
An important take-home lesson! Except for the above two pairs, all other pairs have the same outermost electron configuration (E.C.).
Stream:JEESubject:ChemistryTopic:f-blockSubtopic:f-block
⏱ 2mℹ️ Source: QB
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