Isotopes
9 past-paper questions on Isotopes · examined 2021–2025.
20252 questions
Which definition of isotopes is correct?
The table shows data about the two isotopes in a sample of the element europium. What is the relative atomic mass of this sample of europium?
20241 question
An element has two isotopes of relative isotopic masses x and x+2. The diagram shows the composition of atoms in a sample of the element. What is the relative atomic mass of the sample of the element?
20231 question
Naturally occurring bromine has a relative atomic mass of 80 and consists entirely of two isotopes of relative atomic masses 79 and 81. What can be deduced about naturally occurring bromine from this information only?
20222 questions
What is the nucleon number of the isotope of uranium, 235 92U?
39 19K is the full symbol for one isotope of potassium. Suggest the full symbol for one other isotope of potassium.
20212 questions
The table shows data for particles W, X, Y and Z. Which statements are correct?
Give one similarity in the atomic structure of these two isotopes.
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