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Concepts Of Physics MCQ Edition [Volume 2]

Exam: Concepts Of Physics MCQ Edition [Volume 2]
Subject: Physics
Chapter: The Nucleus

Concepts Of Physics MCQ Edition [Volume 2] · Physics · The Nucleus

Determine the missing products to complete the given decay scheme:...

Determine the missing products to complete the given decay scheme:
^{19}_{8}\text{O} \to ^{19}_{9}\text{F} + \,?

Options

A $e^{+} + \nu$
B $e^{+} + \bar{\nu}$
C $e^{-} + \bar{\nu}$
D $e^{-} + \nu$

Correct answer

C. $e^{-} + \bar{\nu}$

Step-by-step solution

The given decay scheme is ^{19}_{8}\text{O} \to ^{19}_{9}\text{F} + \,?

<br><br>In this process, the atomic number

Z

increases by

1

(from

8

to

9

) while the mass number

A

remains unchanged (

19

).<br><br>This indicates a

\beta^{-}

decay, where a neutron is converted into a proton, an electron (

e^{-}

), and an antineutrino (

\bar{\nu}

).<br><br>The fundamental nuclear reaction is

n \to p + e^{-} + \bar{\nu}

.<br><br>Thus, the missing products are

e^{-}

and

\bar{\nu}.

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