Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasysingle choice

Analysis show that nickel oxide consists of nickel ion with 96% ions having $d^{8}$ configuration and 4% having of $d^{7}$ configuration. Which amongst the following best represents the formula of the oxide.

Options:

Answer:

Solution:

$d^{8} \to N i^{+ 2}, d^{7} \to N i^{+ 3}$
Total charge of nickel
$(0.96 \times 2) + (0.04 \times 3) = 2.04$
Number of $O^{- 2}$ ion $= \frac{2.04}{2} = 1.02$
Formula of solid $= N i O_{1.02} = N i_{0.98} O_{1.00}$

Stream:NTA_ABHYASSubject:ChemistryTopic:Mole ConceptSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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