Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsFirst Order ReactionsMedium2 minQB

ChemistryMediummultiple choice

Passage / Comprehension

Radioactive elements can be categorized into:

(i) Neutron-rich nuclide

(ii) Neutron-poor nuclide

In order to achieve a stable n/p ratio, these nuclides either emit $β^{-}$ , $β^{+}$ (positron), or $α$ -particles, depending upon the n/p ratio of the unstable nuclei and stable nuclei.

₅₃P¹³⁵ $⟶$ Q + a

Q $⟶$ R + b

[Note: The only stable isotopes of elements P and Q are ₅₃P¹³³ and ₅₄Q¹³⁷, respectively.]

Elements P, Q, and R do not show resemblance to any known element.

Particles $a$ and $b$ can be respectively

Options:(select one or more)

Answer:

B, C

Solution:

If $n / p$ ratio is smaller than required possible emission is

$_{53} P^{135}_{54} Q^{135} +_{- 1} e^{0}$

If $n / p$ is smaller than required possible emission are

$_{54} Q^{135}_{52} R^{131} +_{2} He^{4}$

$_{54} Q^{135} ⟶⟶_{53} R_{135} +_{+ 1} e^{0}$

Stream:JEESubject:ChemistryTopic:Chemical KineticsSubtopic:First Order Reactions

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...