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प्रश्न
Distinguish between:
s-block - p-block
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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
Fill in the blank:
The modern periodic table consists of ……………. periods.
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
State modern periodic law.
Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
Explain why, the noble gases are placed in a separate group.
Consider the following elements:
Ca, Cl, Na, I, Li, Ba, Sr, K, Br
Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.
Explain why All the elements of a period have different chemical properties.
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 is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?
Helium and neon are unreactive gases. What, if anything, do their atoms have in common?
How many groups and periods does the modern periodic table have?
Name two elements in Inert gas.
Name two elements in each case:
Actinides
Name the type of elements which have outermost shell incomplete.
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Is it larger or smaller than caesium (Cs)?
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
Name and state the following with reference to the elements of the first three periods of the periodic table.
A covalent compound formed by an element in period 2 and a halogen.
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
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.
Oxygen [Oxide]
Group 13 to 18 : p block : : _______ : d block
The modern periodic table has 1 to 7 periods.
The inert gas which lies in the third period is ______
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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 variable valency and is a member of the Oxygen family (group 16).
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
______ group elements are called alkaline earth metals.
Explain the position of hydrogen in the periodic table.
Explain giving reason why although the nuclear charge in atoms increases in moving from left to right in a period as well as in moving from top to bottom in a group in the Modern periodic table, but the size of the atoms does not vary similarly in both situations.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
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?
