Chemistry 9701: ATOMIC STRUCTURE Topical Past Paper Questions
Cambridge AS & A Level Chemistry (9701) past-paper questions on ATOMIC STRUCTURE, free. This topic is frequently examined across 26 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Cobalt is a transition element. It forms a wide range of coloured compounds that contain Co $ ^{2+} $ ions or Co $ ^{3+} $ ions. (a) Explain why a transition element, such as cobalt, has variable oxidation states in its compounds. [1] (b) Complete the electronic configurations of…
Chromium, Cr, and its compounds are widely used in many chemical reactions. (a) Cr exists as four stable isotopes. (i) The most common isotope of Cr is chromium-52. Determine the number of protons, neutrons and electrons in an atom of chromium-52. number of protons ..... neutrons…
Which species contains the same number of neutrons as $ {}^{14}_{6}C $ and the same number of electrons as $ {}^{23}_{11}Na^{+} $? A $ {}^{17}_{9}F $ B $ {}^{16}_{7}N^{3-} $ C $ {}^{20}_{10}Ne $ D $ {}^{16}_{8}O^{2-} $
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