NICOLE'S PAPER 3 EXAM

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2 1 (a) The electronic structures of five atoms, A, B, C, D and E, are shown. A B C D E  nswer the following questions about these electronic structures. A Each electronic structure may be used once, more than once or not at all. State which electronic structure, A, B, C, D or E, represents: (i) an atom in Group II of the Periodic Table . ...................................................................................................................................... [1] (ii) an atom with a proton number of 13 . ...................................................................................................................................... [1] (iii) an atom that forms a stable ion with a single negative charge . ...................................................................................................................................... [1] (iv) an atom of a non-metal that forms a giant covalent structure . ...................................................................................................................................... [1] (v) an atom of a metal used in food containers. . ...................................................................................................................................... [1] (b) C  omplete the table to show the number of electrons, neutrons and protons in the vanadium atom and calcium ion shown. number of number of number of electrons neutrons protons 23V 51 23 20Ca 48 2+ 28  [3]  [Total: 8] © UCLES 2021 0620/31/M/J/21

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