Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsMiscellaneous/MixedMedium2 minQB

ChemistryMediumsingle choice

Number of neutrons in a parent nucleus X , which gives $_{7}^{14} N$ after two successive $β$ -emissions would be

Answer:

Solution:

In β⁻ emission, the atomic number increases by +1, while the mass number remains the same.

The final nucleus is $_{7}^{14} N$ .

Since there were two β⁻ emissions, the atomic number (Z) of the parent nucleus was:

$7 - 2 = 5$

The number of neutrons in the parent nucleus is:

$A - Z = 14 - 5 = 9$

Stream:JEESubject:ChemistryTopic:Chemical KineticsSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: QB

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