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2020 H2 Chemistry Paper 2 Answers by clarissa yeo is a document available to read on EtoBox.
1. The second ionization energies of period 3 elements generally increases from B to H due to the increasing nuclear charge and decreasing atomic radius. Aluminium is element C. The big drop from A to B is due to the removal of a 3s electron in B+ compared to a 2p electron in A+. The slight drop from C to D is because the np electron removed from D+ is further from the nucleus than the ns electron removed from C+. 2. The melting points of carbon, silicon, and germanium decrease due to the increasing size
- Author
- clarissa yeo
- Language
- EN