Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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In Beta Decay, an Electron (Or a Positron) is Emitted by a Nucleus. Does the Remaining Atom Get Oppositely Charged? - Physics

Short Note

In beta decay, an electron (or a positron) is emitted by a nucleus. Does the remaining atom get oppositely charged?

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Solution

In beta decay, a neutron from the nucleus is converted to a proton releasing an electron and an antineutrino or a proton is converted to a neutron releasing a positron and a neutrino.

i.e.  `β^(-) "decay"  :  n → p + e + bar(nu)`

`β^(+) "decay"  :  p → n + e^(+) + nu`

Since the number of valence electrons present in the parent atom do not change, the remaining atom does not get oppositely charged. Instead, due to a change in the atomic number, there's a formation of a new element.

Concept: Radioactivity - Beta Decay
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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 24 The Nucleus
Short Answers | Q 8 | Page 440
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