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प्रश्न
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, f-block.
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संबंधित प्रश्न
How does the tendency of elements to gain electrons change as we move from left to right in a period? State the reason of this change.
How many periods and groups are there in the long form of periodic table?
How were the positions of cobalt and nickel resolved in the modern periodic table?
On which side of the periodic table will you find non-metals?
Would you place the two isotopes of chlorine, CI-35 and CI-37 in different slots because of their different atomic masses or in the same slot because their chemical properties are the same? Justify your answer.
Which of the following statement about the modern periodic table is correct?
(a) It has 18 horizontal rows known as periods.
(b) It has 7 vertical columns known as periods.
(c) It has 18 vertical columns known as groups.
(d) It has 7 horizontal rows known as groups.
How would the tendency to gain electrons change on moving from left to right in a period of the periodic table?
Explain why All the elements of a group have similar chemical properties.
State how the valency of elements varies in a group of the periodic table?
On the basis of electronic configuration, how will you identify chemically similar elements?
What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
What are the merits of the modern periodic table of elements?
Define:
Periodic table
State its position in the periodic table?
Answer the following in respect of element `31/15 P`
Give its electronic configuration
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
What is meant in the periodic table by a period?
What is the number of elements in the 1st period?
Give the symbol and valency of the following element and radical.
Calcium
Give the symbol and valency of the following element and radical.
Zinc
Give the symbol and valency of the following element and radical.
Hydroxide
Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
The d-block elements are called as _______ elements.
The modern periodic table shows the molecular masses of the elements in each frame.
The K and L shells of the elements Na and Mg contain electrons.
Distinguish between:
s-block - p-block
The arrangement of elements in the Modem Periodic Table is based on their ______
Which of these belong to the same period?
| Element | A | B | C |
| Atomic number | 2 | 10 | 5 |
In the modern periodic table, elements are arranged according to their ______
The amount of energy released when one or more electrons is added to the neutral atom is ______
The longest period of the Modern Periodic Table is period.
Which of the following elements will form an acidic oxide?
“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
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 same valency as Lithium.
Noble gases are placed in the ______ group in the modern periodic table.
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Write the molecular formula of the compound formed by the combination:
E and B
Name two elements that you would expect to show chemical reactions similar to calcium. What is the basis of your choice?
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
