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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
Fill in the blank:
The modern periodic table consists of ……………. periods.
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?
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Arrange the elements of second and third periods in increasing order of their atomic size.
Third Period.
State the number of elements in Period 3 of the Periodic Table.
What are the elements.
The modern periodic table is divided into which blocks?
Complete the following flow chart.
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has a similar structure to diamond.
