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प्रश्न
The d-block elements are called as ______ elements.
विकल्प
transition
metalloid
normal
inner transition
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उत्तर
The d-block elements are called as transition elements.
Explanation:
The d-block elements are known as transition elements because they are positioned between the highly reactive s-block metals and the less metallic p-block elements. Their properties represent a “transition” from the strongly electropositive nature of s-block metals to the covalent and non-metallic nature of p-block elements.
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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?
What is periodicity in properties of elements with reference to the Modern Periodic Table?
How many periods and groups are there in the long form of periodic table?
Give two example of group 1 elements.
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
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
How do the atomic radii of elements change as we go from left to right in a period of the periodic table?
Explain why All the elements of a group have similar chemical properties.
Explain why, the first period of the periodic table has only two elements whereas second period has eight elements
In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
The elements A, B, C and D belong to groups 1, 2, 14 and 17 respectively of the periodic table. Which of the following pairs of elements would produce a covalent bond?
(i) A and D
(ii) C and D
(iii) A and B
(iv) B and C
(v) A and C
What are horizontal rows and vertical columns in a periodic table known as?
Name two elements in Alkaline earth metals.
Name two elements in halogens.
Name the type of elements which have outermost shell incomplete.
Name the type of elements which have two outermost shell incomplete.
Name the type of elements which have two electrons in the outermost orbit.
Write a short note.
Position of isotopes in the Mendeleev’s and the modern periodic table.
What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Give the symbol and valency of the following element and radical.
Potassium
Give the symbol and valency of the following element and radical.
Magnesium
Give the symbol and valency of the following element and radical.
Sulphite
Give the chemical formula of sodium nitrate
Compare Modern Periodic Law with Mendeleev's Periodic Law.
Find the correlation:
Group 13 to 18 : p block : : ______ : d block
Answer the following question in one sentence.
The modern periodic table is divided into which blocks?
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?
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 an element metal or nonmetal?
- Which is the outermost orbit of element B?
- Identify C element and it's physical state.
______ forms the basis of the modern periodic table.
In the modern periodic table, elements are arranged according to their ______
______ group elements are called alkaline earth metals.
Spot the error:
There are 5 periods and 17 groups in the modern periodic table.
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
Name the non-metals in the first twenty elements.
Answer the following in respect of element \[\ce{_16^32S}\].
To which group and period does it belong?
