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प्रश्न
Answer the following question in one sentence.
The modern periodic table is divided into which blocks?
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उत्तर
The modern periodic table is divided into s-block, p-block, d-block, and f-block.
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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?
Write the merits of the modern periodic table over Mendeleev’s Periodic table
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
What is meant by a group, in a periodic table?
Give two example of group 18 elements.
On which side of the periodic table will you find metals?
On which side of the periodic table will you find non-metals?
Which element has the electronic configuration 2, 8, 2?
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
What is the number of valence electrons in the atoms of first elements in a period?
State how the valency of elements varies in a group of the periodic table?
State how the valency of elements varies in a period of the periodic table?
Name two elements in Inert gas.
Name two elements in each case: Lanthanides
Name the type of elements which have outermost shell complete.
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?
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
How will the tendency to gain electrons change as we go from left to right across a period? Why?
Give the symbol and valency of the following element and radical.
Calcium
Give the symbol and valency of the following element and radical.
Aluminium
Give the symbol and valency of the following element and radical.
Ammonium
Give the symbol and valency of the following element and radical.
Bisulphate
Give the symbol and valency of the following element and radical.
Bisulphite
Give the chemical formula of carbonic acid
Which of the following statements about the Modern periodic table is correct?
Write an explanation.
Period
Explain structure of modern periodic table in short.
What are groups and periods in the modern periodic table?
The inert gas which lies in the third period is ______
Which of the following statements about the Modern Periodic Table is correct:
Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
The three elements A, B and C with similar properties have atomic masses X, Y and Z respectively. The mass of Y is approximately equal to the average mass of X and Z. What is such an arrangement of elements called as? Give one example of such a set of elements.
Spot the error:
There are 5 periods and 17 groups in the modern periodic table.
Name the metalloids in the first twenty elements.
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
Match the atomic number with the following:
An element of group 2.
