Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptAtomic mass/Average Atomic Mass/Average Molecular MassEasy2 minPYQ_2014

ChemistryEasysingle choice

$B e^{2 +}$ is isoelectronic with which of the following ions?NEET 2014

Answer:

Solution:

Isoelectronic species are those species that have the same number of electrons.

${}_{4}{Be}^{2 +} = 1 s^{2} = 2 e^{-}$

${}_{3}{Li}^{+} = 1 s^{2} = 2 e^{-}$

Stream:NEETSubject:ChemistryTopic:Mole ConceptSubtopic:Atomic mass/Average Atomic Mass/Average Molecular Mass

⏱ 2mℹ️ Source: PYQ_2014

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