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Figure 1 shows the dot and cross diagram for a molecule of ammonia - Edexcel - GCSE Chemistry - Question 1 - 2018 - Paper 1
Question 1
Figure 1 shows the dot and cross diagram for a molecule of ammonia. (a) (i) What do the dots and crosses represent in the diagram? A electrons B neutrons C ... show full transcript
Worked Solution & Example Answer:Figure 1 shows the dot and cross diagram for a molecule of ammonia - Edexcel - GCSE Chemistry - Question 1 - 2018 - Paper 1
Step 1
What do the dots and crosses represent in the diagram?
Answer
In the dot and cross diagram for ammonia, the dots represent the electrons contributed by the nitrogen atom, while the crosses represent the electrons contributed by the hydrogen atoms. Each dot and cross indicates the presence of an electron in the bonding pairs between atoms.