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प्रश्न
Give the symbol and valency of the following element and radical.
Carbonate
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उत्तर
| Element/Radical | Symbol | Valency |
| Carbonate | \[\ce{CO3}\] | two |
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संबंधित प्रश्न
The position of three elements A, B and C in the Periodic Table are shown below –
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Group 16
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Group 17
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−
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−
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A
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−
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−
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B
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C
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(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
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?
On which side of the periodic table will you find metals?
What is the usual number of valence electrons in the atoms of the last element in a period?
Correct the statement.
Copper and zinc are representative elements.
Give the symbol and valency of the following element and radical.
Sulphite
State any five features of modern periodic table.
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 variable valency and is a member of the Oxygen family (group 16).
Spot the error:
The elements of group 13 are called the carbon family.
Give reason for the following:
Inert gases do not form ion.
