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प्रश्न
Distinguish between:
s-block - p-block
उत्तर
| s-block | p-block | |
| 1. | The s-block contains groups 1 and 2. | The p-block contains groups 13 to 18. |
| 2. | All the elements of s-block are metals. | p-Block elements include metals, nonmetals and metalloids. |
| 3. | s-block elements are placed to the extreme left side in the modern periodic table. | p-block elements are placed to the extreme right side in the modern periodic table. |
| 4. | There is no zig-zag line to separate different types of elements in the s-block of the periodic table. | A zig-zag line can be drawn to separate different types of elements (metals, metalloids and nonmetals) in the p-block of the periodic table. |
संबंधित प्रश्न
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?
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
How were the positions of cobalt and nickel resolved in the modern periodic table?
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same group of the periodic table?
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
State how the valency of elements varies in a group of the periodic table?
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
What is the number of elements is 1st period the modern periodic table?
The atomic numbers of the three elements X, Y and Z are 2, 6 and 10 respectively.
(i) Which two elements belong to the same group?
(ii) Which two elements belong to the same period?
Give reasons for your choice.
Name the scientist who stated the modern periodic law.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
Write a short note.
Position of isotopes in the Mendeleev’s and the modern periodic table.
Name the cation and the anion in the salt – calcium sulphate
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.
Nitrate
State what is meant by the term chemical formula.
Give the chemical formula of sodium hydroxide
Give the chemical formula of sodium nitrate
Give the chemical formula of ammonium sulphate
Give the chemical formula of calcium phosphate
Fill in the blank:
The element lithium in the Modern Periodic Table with valency 1+ belongs to the group ______.
Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
State the number of elements in Period 1 of the Periodic Table.
State the number of elements in Period 2 of the Periodic Table.
The d-block elements are called as _______ elements.
p-block is composed of groups 1 and 2.
Complete the following flow chart.
The longest period of the Modern Periodic Table is period.
Where would you locate the element with electronic configuration 2,8 in the Modern Periodic Table?
Which of the following elements would lose an electron easily?
Arrange the following elements in the increasing order of their metallic character
| Mg, | Ca, | K, | Ge, | Ga |
______ group elements are called alkaline earth metals.
Explain the position of hydrogen in the periodic table.
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 ______.
Define periods of modern periodic table.
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
Boron, Aluminium, Gallium, Indium, Thallium
Answer the following question in relation to the above group of elements:
If the electronic configuration of aluminium is 2, 8, 3, how many electrons are there in the outer shell of thallium?
