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प्रश्न
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.
उत्तर
- 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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संबंधित प्रश्न
Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
State the modern periodic law for classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
Compare Modern Periodic Law with Mendeleev's Periodic Law.
Three elements A, B and C have 3, 4 and 2 electrons respectively in their outermost shell. Give the group number to which they belong in the Modern Periodic Table. Also, give their valencies.
______ group elements are called alkaline earth metals.
Define periods of modern periodic table.
Name the non-metals in the first twenty elements.
Match the atomic number with the following:
A rare gas.
