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WorksheetsReview radioactivity
Total questions: 13
Worksheet time: 19mins
From the nuclear belt of stability, you can see that
As atoms increase in atomic number, more neutrons are needed to achieve a stable isotope
As atoms increase in atomic number, fewer neutrons are needed to achieve a stable isotope
As atoms decrease in atomic number, more neutrons are needed to achieve a stable isotope
There is no relationship between the atomic number and the number of neutrons
Determine the number of protons and neutrons in a
nucleus of iron: mass number 57, atomic number 26.
Z = 57, N=26
Z=26, N=31
Z =26, N=57
Z=31, N=26
The band of stability is above the line on the graph that has a slope of 1.
What does this indicate about the number of protons and neutrons for the majority of elements?
There are more protons than neutrons
There are more neutrons than protons
There are equal numbers of protons and neutrons
Which decay is most likely to occur when there are too many neutrons in the atomic nucleus
neutron → proton + β−
proton → neutron + β+
neutron → proton + β+
proton → neutron + β−
At atomic numbers of greater than 82
Most isotopes are stable
At least one isotope is stable
No isotopes are stable
Alphas are commonly emitted by radionuclei with
atomic numbers less than 20
Atomic numbers less than 82 and too many protons
Atomic numbers less than 82 and too many neutrons
Atomic numbers greater than 82
Gamma radiation is emitted when
A neutron decays into a proton and an electron and the electron is ejected from the nucleus
A proton decays into a neutron and a positron, and the positron is ejected from the nucleus
A neutron decays into a positron and an electron, which then annihilate
A proton captures a low orbit electron and turns into a neutron
A nuclide has 90 neutrons and 60 protons, will it undergo decay?
No, it is stable
Yes, it will undergo beta minus decay
Yes, it will undergo beta plus decay
Yes, it will undergo alpha decay
A β+ particle is emitted when
A neutron decays into a proton and an electron and the electron is ejected from the nucleus
A proton decays into a neutron and a positron, and the positron is ejected from the nucleus
A neutron decays into a positron and an electron, which then annihilate
A proton captures a low orbit electron and turns into a neutron
β− radiation has
the mass of an electron and a charge of +1
the mass of an electron and a charge of -1
a mass of 4 AMU and a charge of 2+
no mass or charge
Gamma radiation has
the mass of an electron and a charge of +1
the mass of an electron and a charge of -1
a mass of 4 AMU and a charge of 2+
no mass or charge
Alpha radiation has
the mass of an electron and a charge of +1
the mass of an electron and a charge of -1
a mass of 4 AMU and a charge of +2
no mass or charge
Rank the penetrating power of radiation from lowest to highest
gamma, beta minus, alpha
beta minus, gamma, alpha
alpha, beta minus, gamma
alpha, gamma, beta minus
