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. ....................................................................................................................................... . .................................................................................................................................

Chemistry

IGCSE&ALevel

CAIE

Exam No：9701_w24_qp_23 Year：2024 Question No：3(a)

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Knowledge points:

3.3.1 define metallic bonding as the electrostatic attraction between positive metal ions and delocalised electrons

9.3.1 predict the characteristic properties of an element in a given group by using knowledge of chemical periodicity

9.3.2 deduce the nature, possible position in the Periodic Table and identity of unknown elements from given information about physical and chemical properties

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