(a) Study the information in the table below and answer the questions that follow. Theletters do not represent the actual symbols of theelements.Element Atomic number Melting pointofelementFormula ofchlorideMelting pointof chlorideG 11 98 GCI 801H 12 650 HCl 2 715J 14 1410 JCl 4 -70K 16 113 K 4 Cl 2 -80L 20 851 LCl 2 780(i) Which elements are metals? Giveareason (2marks)........................................................................................................................................................................................................................................................................(ii) Write the formula of the compound formed when element H reacts withelement(1 mark)....................................................................................................................................(iii) Explain why the melting point of J is higher than thatof K (2marks)............................................................................................................................................................................................................................................................................................................................................................................................................(iv) What is the oxidation state of J initschloride? (1mark)....................................................................................................................................(v) How doesthe:-Melting point of the fluoride of G compare with that of its chloride?10Explain (2marks)............................................................................................................................................................................................................................................................................................................................................................................................................-Reactivity of H and L with water compare? Giveanexplanation
Question
(a) Study the information in the table below and answer the questions that follow. Theletters do not represent the actual symbols of theelements.Element Atomic number Melting pointofelementFormula ofchlorideMelting pointof chlorideG 11 98 GCI 801H 12 650 HCl 2 715J 14 1410 JCl 4 -70K 16 113 K 4 Cl 2 -80L 20 851 LCl 2 780(i) Which elements are metals? Giveareason (2marks)........................................................................................................................................................................................................................................................................(ii) Write the formula of the compound formed when element H reacts withelement(1 mark)....................................................................................................................................(iii) Explain why the melting point of J is higher than thatof K (2marks)............................................................................................................................................................................................................................................................................................................................................................................................................(iv) What is the oxidation state of J initschloride? (1mark)....................................................................................................................................(v) How doesthe:-Melting point of the fluoride of G compare with that of its chloride?10Explain (2marks)............................................................................................................................................................................................................................................................................................................................................................................................................-Reactivity of H and L with water compare? Giveanexplanation
Solution
The question seems to be incomplete. However, I'll try to answer based on the information provided.
(i) The metals in the table are G, H, and L. This is because metals generally have low atomic numbers and high melting points.
(ii) The formula of the compound formed when element H reacts with chlorine (Cl) would be HCl.
(iii) The melting point of J is higher than that of K because it has a higher atomic number, which means it has more electrons. More electrons mean stronger metallic bonds, which require more energy (higher temperature) to break.
(iv) The oxidation state of J in its chloride (JCl4) is +4. This is because chlorine (Cl) has an oxidation state of -1, and since there are four chlorine atoms for every one atom of J, J must have an oxidation state of +4 to balance it out.
(v) Without specific data on the fluoride of G, it's hard to compare its melting point with that of its chloride. However, generally, fluorides have higher melting points than chlorides due to the stronger ionic bonds in fluorides.
The reactivity of H and L with water can't be determined without specific data. However, generally, elements with lower atomic numbers (like H) are more reactive than those with higher atomic numbers (like L).
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