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प्रश्न
Find the correlation:
Group 13 to 18 : p block : : ______ : d block
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उत्तर
Group 13 to 18 : p block : : Group 3 to 12 : d block
Explanation:
The d-block in the Modern Periodic Table consists of Groups 3 to 12. These elements are referred to as "transition elements" because they act as a bridge between the highly electropositive s-block metals and the electronegative p-block non-metals. In these elements, the last electron enters the d-orbital of the penultimate shell.
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संबंधित प्रश्न
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
Write the names given to the vertical columns and horizontal rows in the Modern Periodic Table. How does the metallic character of elements vary on moving down a vertical column? How does the size of atomic radius vary on moving left to right in a horizontal row? Give reason in support of your answer in the above two cases.
Fill in the following blank with suitable word:
Group 1 elements are called ...............
Give two example of group 1 elements.
On which side of the periodic table will you find metals?
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same period of the periodic table?
What is the major characteristic of the first elements in the periods of the periodic table? What is the general name of such elements?
Explain why All the elements of a period have different chemical properties.
(b) What is the number of elements is 3rd period, the modern periodic table?
What is a group in the periodic table?
Name the scientist who stated the modern periodic law.
What are horizontal rows and vertical columns in a periodic table known as?
Name two elements in Alkali metals.
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
An element barium has the atomic number 56. Look up its position in the periodic table and answer the following question.
Is it larger or smaller than caesium (Cs)?
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.
What is the number of elements in the 1st period?
The horizontal rows in a periodic table are called _____.
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Two elements P and Q belong to the same period of the modern periodic table and are in group 1 and group 2, respectively. Compare the following characteristics in the tabular form.
- Number of electrons in their atoms
- Their tendency to lose electrons
- Their metallic characters
- Formation of their oxides
- Formulae of their chlorides
Define the atomic size.
Give the symbol and valency of the following element and radical.
Sodium
Give the chemical formula of sodium bicarbonate
Write scientific reason.
There was ambiguity about the correct position of hydrogen in Mendeleev’s periodic table.
Position of A, B and C three elements is given in the table from the modern periodic table. Answer the following questions.
| Periods | Group 2 | Group 17 |
| 2 | ----- | A |
| 3 | B | ----- |
| 4 | ----- | C |
- What is A element metal or nonmetal?
- Which is the outermost orbit of element B?
- Identify C element and it's physical state.
Noble gases belong to______ group of the periodic table.
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
The inert gas which lies in the third period is ______
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.
Spot the error:
The elements of group 13 are called the carbon family.
Explain the position of hydrogen in the 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
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.
Name the non-metals in the first twenty elements.
