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Cambridge Assessment International Education Cambridge ...
papers.gceguide.comB It has a high melting point due to strong attractive forces between ions. C It has a regular lattice of oppositely charged ions in a ‘sea of electrons’. D The ionic bonds are formed between metallic and non-metallic elements. 5 What is the total number of electrons in one molecule of ammonia, NH 3? A 6 B 8 C 10 D 11 6 Rubidium has two ...