Chemistry - Atomic Structure Question with Solution | TestHub

ChemistryAtomic StructureQuantum NumbersMedium2 minQB

ChemistryMediumsingle choice

An element ' X ' with mass number 81 contains $31.7%$ more neutrons as compared to protons, then what is the representation of element ' X '.

Answer:

Solution:

Let $P$ be protons, $N$ be neutrons. Given $N = P + 0.317 P = 1.317 P$ . Mass number $A = P + N = 81$ .

$P + 1.317 P = 81 ⟹ 2.317 P = 81 ⟹ P \approx 35$ .

Thus, the element is $_{35}^{81} X$ .

Stream:JEESubject:ChemistryTopic:Atomic StructureSubtopic:Quantum Numbers

⏱ 2mℹ️ Source: QB

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