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प्रश्न
Distinguish between:
s-block - p-block
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उत्तर
| Sr. No. | 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 the 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
How does the metallic character of elements in Modern Periodic Table vary on moving from left to right in a period, and (ii) down a group?Give reason to justify your answer.
State modern periodic law.
Fill in the following blank with suitable word:
Group 18 elements are called ...............
What is meant by a period, in a periodic table?
How were the positions of isotopes of an element decided in the modern periodic table?
What is the name of those elements which divide metals and non-metals in the periodic table?
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same period of the periodic table?
Give alongside is a part of the periodic table :
As we move horizontally from left to right:
| Li | Be | B | C | N | O | F | |
| Na | Mg | Al | Si | P | S | Cl |
(i) What happens to the metallic character of the elements?
(ii) What happens to the atomic size?
What is the usual number of valence electrons in the atoms of the last element in a period?
What is the usual number of valence electrons and valency of group 18 elements of the periodic table?
What is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?
In the modern Periodic Table, why does cobalt with higher atomic mass of 58.93 appear before nickel having lower atomic mass of 58.71?
From the standpoint of atomic structure, what determines which element will be the first and which the last in a period the periodic table?
Consider the following elements:
20Ca, 8O, 18Ar, 16S, 4Be, 2He
Which of the above elements would you expect to be:
(i) very stable?
(ii) in group 2 of the periodic table?
(iii) in group 16 of the periodic table?
An element X belongs to 3rd period and group 2 of the periodic table. State:
(a) number of valence electrons
(b) valency
(c) metal or non-metal
(d) name of the element
Name two elements in each case:
Actinides
Name the type of elements which have two electrons in the outermost orbit.
Answer the following in respect of element `31/15 P`
Give its electronic configuration
What is the main characteristic of the last element in each period of the periodic table?
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?
How will the tendency to gain electrons change as we go from left to right across a period? Why?
From the standpoint of atomic structure, what determines which elements will be the first and which the last in a period of the periodic table?
Answer the following question.
How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements?
Give the symbol and valency of the following element and radical.
Sodium
Give the symbol and valency of the following element and radical.
Ammonium
Give the symbol and valency of the following element and radical.
Bicarbonate
Give the chemical formula of sodium nitrate
The groups 1 and 2 constitute the ______ block.
Right or wrong sentence.
To the left of the zig-zag line in the periodic table are the metal elements.
In the modern periodic table, the positions of 1 to 20 elements are shown here. Identify the elements A and B. Write their atomic number.
An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.
- Which element has more metallic character from these two elements?
- What is the valency of each X and Y elements?
- Atom size of Y element is smaller than atom size of X element? Explain?
______ is the longest period in the periodical table.
The amount of energy released when one or more electrons is added to the neutral atom is ______
An element which is an essential constituent of all organic compounds belongs to
“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
What is the general name of the last elements of the Periodic Table?
Answer the following in respect of element \[\ce{_16^32S}\].
Give its formula with hydrogen.
