Atomic Structure
35 past-paper questions on Atomic Structure · examined 2020–2025.
20258 questions
An atom of element X is shown. Which element is X?
Which statement is correct? A All compounds are ionic. B All compounds conduct electricity when molten. C Each atom of an element contains the same number of protons. D In a mixture of substances, the proportions of the substances are always the same.
Atom X has an atomic number of 19 and a nucleon number of 42. Atom Y has an atomic number of 20 and a nucleon number of 40. Which statement is correct?
Atom X has an atomic number of 19 and a nucleon number of 42. Atom Y has an atomic number of 20 and a nucleon number of 40. Which statement is correct?
Atoms of element Q form positive ions. An ion of Q has 10 electrons and 14 neutrons. Which statement is correct?
Describe one difference between the isotopes 32 16S and 33 16S.
Explain why all the isotopes of sulfur have the same chemical properties.
Show by calculation that the relative atomic mass of sulfur for this sample is 32.09.
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