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प्रश्न
Answer the following question in one sentence.
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, and f-block.
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संबंधित प्रश्न
The position of three elements A, B and C in the Periodic Table are shown below –
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Group 16
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Group 17
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A
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B
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C
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(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
The three elements having chemical symbols of Si, B and Ge are:
(a) all metals
(b) all non-metals
(c) all metalloids
(d) Si is metalloid, B is metal and Ge is non-metal
The modern periodic table was prepared by ______.
The atomic particle whose number in the atoms of an element always remains the same and which forms the real basis for the modern classification of elements is:
(a) electron
(b) proton
(c) neutron
(d) meson
How would the tendency to lose electrons change as we go from left to right across a period of the periodic table?
What is the number of valence electrons in the atoms of first elements in a period?
What is the major characteristic of the first elements in the periods of the periodic table? What is the general name of such elements?
What are the merits of the modern periodic table of elements?
What are the advantages of the periodic table?
Name the type of elements which have outermost shell complete.
Name the type of elements which have two electrons in the outermost orbit.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
Name an alkali metal in period 3 and halogen in period 2.
How many periods and groups are there in the modern periodic table?
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.
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
Give the symbol and valency of the following element and radical.
Nitrate
Give the symbol and valency of the following element and radical.
Sulphite
Give the chemical formula of magnesium nitrate
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
Fill in the blank:
The element lithium in the Modern Periodic Table with valency 1+ belongs to the group ______.
Right or wrong sentence.
The modern periodic table has 1 to 7 periods.
Complete the following flow chart.
Distinguish between:
s-block - p-block
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.
______ is the longest period in the periodical table.
______ forms the basis of the modern periodic table.
The three elements A, B and C with similar properties have atomic masses X, Y and Z respectively. The mass of Y is approximately equal to the average mass of X and Z. What is such an arrangement of elements called as? Give one example of such a set of elements.
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:
A and F
Define groups of modern periodic table.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
What is the general name of the last elements of the Periodic Table?
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
Give reason for the following:
Inert gases do not form ion.
