The Group 14 elements show a change from non-metallic to metallic character down the group. Table 3.1 shows some properties of two Group 14 elements, C and Sn , in their standard states. The table is incomplete. Table 3.1 (i) Complete Table 3.1. (ii) Identify the lattice structure shown by graphite. ................................................................................................................................. (iii) Explain why Sn has good electrical conductivity. ....................................................................................................................................... . .................................................................................................................................

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