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CIE Nov 2013 v1 Paper 2 Q1
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![Page 2 Mark Scheme Syllabus Paper GCE AS/A LEVELOctober/November 2013 9701 21 (a) number of number of shape of bond pairs lone pairs molecule formula of a molecule with this shape trigonal planar BH3 tetrahedral Group IV CH4 allow other hydrides NH3 trigonal Group V pyramidal hydrides pyramidal or allow other H2O bent or Group VI non-linear or allow other V-shaped hydrides 1 mark for each correct row (31) [3] (b) (i) (ii) octahedral or square-based bipyramid (iii) 90 (1) (1) (1) [3] [Total: 6]Cambridge International Examinations 2013<br />](https://learnah.org/wp-content/uploads/2018/08/November_2013_v1_MS_-_Paper_2_CIE_Chemistry_A-level_1-2.jpg)