Measuring and Detecting Radioactivity


What happens to the mass number and atomic in neutron emission?

2 years ago


2 Replies




Alice Shanahan

2 Answers

James H Profile Picture
James H Verified Sherpa Tutor ✓

Enthusiastic physics and maths tutor with 30 years experience

81 reviews

Mass number down one (if one neutron is emitted) and the atomic number stays same-

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.
Sara Ahmed

When neutron emission occurs during radioactive decay this is a result of Beta decay. Beta decay causes a neutron to decay into a proton by emitting an electron. Therefore neutron emission causes the mass number to decrease by one, whilst the atomic number is unaffected.

Think you can help?

More Physics GCSE Questions
Sherpa Badge

Need a GCSE Physics tutor?

Get started with a free online introductions with an experienced and qualified online tutor on Sherpa.

Find a GCSE Physics Tutor