. (a) The melting point and boiling point of lead are 327°C and 1774°C. Also, -219°C and -183°C for Oxygen respectively.
(i) At - 200 °C will the oxygen be a solid, liquid, or gas? ..........
(ii) At 450 °C will the lead be a solid, liquid, or gas? ............
(iii) On heating, what will happen to the temperature of oxygen when it reaches -183℃?
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Explanation:
Chlorine is a chemical element with the symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. Chlorine is a yellow-green gas at room temperature. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity on the Pauling scale, behind only oxygen and fluorine.
Chlorine, 17Cl
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