The table shows some information about elements in Group V. | element | electronic configuration | melting point /°C | boiling point /°C | |:--------|:-------------------------|:------------------|:------------------| | nitrogen | 2,5 | –210 | –196 | | phosphorus | | 44 | 280 | | arsenic | 2, 8, 18, 5 | 817 | 613 | | antimony | 2, 8, 18, 18, 5 | 630 | 1380 | | bismuth | 2, 8, 18, 32, 18, 5 | | |

1. (a)State the electronic configuration for phosphorus.[1]
2. (b)Explain why it is easier to predict the boiling point of bismuth than to predict its melting point.[1]
3. (c)Use information from the table to explain why antimony is a liquid at 1000°C.[1]
4. (d)(i)Nitrogen exists as a diatomic molecule, N2. Draw the dot-and-cross diagram to show the bonding in N2. Show only the outer shell electrons.[1]
5. (d)(ii)Explain, in terms of structure and bonding, why nitrogen has a low melting point.[1]
6. (e)Bismuth is a metal. Predict two physical properties of bismuth. 1 2[2]
7. (f)Calculate the volume, in dm³, of 19.2g of nitrogen at room temperature and pressure. Give your answer to two significant figures. volume dm³[3]