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प्रश्न
Find the odd one out and give its explanation.
विकल्प
F
K
Cl
I
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उत्तर
K
Explanation-
K is placed in group 1 while others are placed in group 17 of the modern periodic table.
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संबंधित प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
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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A
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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?
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
In the Modern Periodic Table, calcium (atomic number 20) is surrounded by elements with atomic numbers 12, 19, 21, and 38. Which of these have physical and chemical properties resembling calcium?
Fill in the following blank with suitable word:
Group 18 elements are called ...............
where should hydrogen be placed in the modern periodic table? Give reason for your answer.
On which side of the periodic table will you find metals?
Explain why, the noble gases are placed in a separate group.
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
Which element has the electronic configuration 2, 8, 2?
What is the major characteristic of the first elements in the periods of the periodic table? What is the general name of such elements?
State how the valency of elements varies in a period of the periodic table?
(b) What is the number of elements is 3rd period, the modern periodic table?
What are the groups in a periodic table? Give two characteristics of each.
Define:
Periodic table
Name the scientist who stated the modern periodic law.
How many groups and periods does the modern periodic table have?
Name the type of elements which have two electrons in the outermost orbit.
State its position in the periodic table?
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
State the main aim of classifying elements. Which is the more fundamental property of elements that is used in the development of Modern Periodic Table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals, non-metals and metalloids?
What is meant in the periodic table by a period?
Give the symbol and valency of the following element and radical.
Zinc
Give the symbol and valency of the following element and radical.
Sulphur [Sulphide]
Give the symbol and valency of the following element and radical.
Nitrogen [Nitride]
Give the symbol and valency of the following element and radical.
Oxygen [Oxide]
Give the symbol and valency of the following element and radical.
Ammonium
Give the symbol and valency of the following element and radical.
Bisulphate
What are the elements.
Elements in the modern periodic table are arranged in ______groups and______ periods.
Noble gases belong to______ group of the periodic table.
______ forms the basis of the modern periodic table.
Which one of the following elements exhibit maximum number of valence electrons?
Group 16 elements are collectively called as ______.
An element belonging to 3d series of modern periodic table has spin magnetic moment = 5.92 B.M. in +3 oxidation state. The atomic number of elements are ______.
State the group and period, of the element having three shells with three electrons in valence shell.
What is the general name of the last elements of the Periodic Table?
