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Transcript
b) 35Cl: 17 p, 18 n, 17 e; 37Cl: 17 p, 20 n, 17 e c) Both: 2, 8, 7 4 Dots or crosses diagrams showing a) 2,8,1; b) 2,8,4; c) 2,8,6 5 a) 5; b) 7; c) 4; d) 8 6 a) A, F b) A c) C d) B, D e) calcium f) 82, lead g) Dots or crosses diagram showing 2,8,8,1 1 a) A pair of electrons which is shared between two atoms. The atoms are held together because the nucleus of each is attracted to the shared pair. b) Chemistry Chapter 3 2 © Pearson Education Ltd 2009 3
