1
Q
The radius of a nucleus is… of the radius of the atom.
A
1/10000
2
Q
An isotope of an element has the same number of…
A
Protons
3
Q
An isotope of an element has a different number of…
A
Neutrons
4
Q
What is meant by the half-life of a radioactive isotope…
A
The time taken for the count rate to fall to half.
5
Q
An ion is an electrically charged atom formed by the loss of gain of an electron.(True or False)
A
True
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