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Question
An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.
- Identify the element X
- Write the electronic configuration of X
- Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?
- What would be the nature (acidic/ basic) of oxides formed?
- Locate the position of the element in the Modern Periodic Table.
Solution
- Element X is sulphur.
- Electronic configuration of X is 2, 8, 6.
- \[\ce{2FeSO4(s) \overset{Heat}{->} Fe2O3(s) + SO2(g) + SO3(g)}\]
- Oxides of sulphurs are acidic in nature.
- Sulphur is placed at group number 16th and 3rd period in the modern periodic table.
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