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Physics Paper 1 question

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persian17:
Anyone know why the answer is B not D? isnt beta just an electron?

astarmathsandphysics:
Yes a beta particle is an electron. An electron is emmited
n>p++e-so the proton number goes up by one. The mass of proton and neutron are the same so the mass doesnt change. it is B

IGSTUDENT:
When Beta particle is emitted 1 neutron is split into 1 proton and one electron. Electron escapes and hence 1 proton is added and 1 neutron lost.

IGSTUDENT:

--- Quote from: astarmathsandphysics on June 08, 2009, 10:18:43 am ---Yes a beta particle is an electron. An electron is emmited
n>p++e-so the proton number goes up by one. The mass of proton and neutron are the same so the mass doesnt change. it is B

--- End quote ---
Excellent explanation

Fouad93:
which year is that question

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