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Radioactive decay equation 4.2.3
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Total cards: 6•Content version: v4•Public deck•Updated: 8/1/2026
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#1
Front (Question)
Why does a radioactive nucleus decay?
Back (Answer)
Radioactive nucleus decays to become a stable nucleus
#2
Front (Question)
In alpha decay=
Back (Answer)
The nucleus loses an alpha particle, which is made out of 2 protons and 2 neutron.
#3
Front (Question)
In beta decay=
Back (Answer)
An electron is ejected and kicked out of the nucleus at a high and fast -moving speed.
#4
Front (Question)
In gamma decay=
Back (Answer)
The composition of the nucleus is unchanged so nothing happen it its atomic mass and atomic number.
#5
Front (Question)
Alpha decay rules:
Back (Answer)
. The atomic number decreases by 2. . The atomic mass decreases by 4.
#6
Front (Question)
Beta decay rule:
Back (Answer)
. The atomic number increases by 1 but the atomic mass does not change.