Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class12  >>  Atoms
0 votes

A Beta decay is a type of radioactive decay in which a beta particle (an electron or a positron) is emitted from an atomic nucleus. During a negative beta decay $\beta^{-}$, which of the following happens?

$(a)\;an\;atomic\;electron\;is\;ejected\qquad(b)\;an\;electron\;which\;is\;already\;present\;within\;nucleus\;inejected\qquad(c)\;a\; neutron\;in\;nucleus\;decays\;emitting\;an\;electron \qquad(d)\;None$

Can you answer this question?

1 Answer

0 votes
Answer : (c) a neutron in nucleus decays emitting an electron
Beta decay is mediated by the weak force. There are two types: beta minus and beta plus. In the case of beta decay that produces an electron emission, it is referred to as beta minus (β−), while in the case of a positron emission as beta plus (β+).
An example of β− decay is shown when carbon-14 decays into nitrogen-14: $^{14}_ {6} C \rightarrow ^{14}_ {7} N + e^{−} + \overrightarrow {ν_e}$
answered Mar 6, 2014 by yamini.v
edited Apr 2, 2014 by balaji.thirumalai

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App