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प्रश्न
The d-block elements are called as _______ elements.
पर्याय
transition
metalloid
normal
inner transition
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उत्तर
The d-block elements are called as transition elements.
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
How many rows and columns are there in the modern periodic table?
What is periodicity in properties of elements with reference to the Modern Periodic Table?
Why do all the elements of the same group have similar properties?
How does the tendency of elements to gain electrons change as we move from left to right in a period? State the reason of this change.
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
Give two example of group 17 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 do the atomic radii of elements change as we go from left to right in a period of the periodic table?
What is a period in a periodic table?
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
On the basis of electronic configuration, how will you identify the first element of a period?
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
Give the group number of following elements present in periodic table
Name the scientist who stated the modern periodic law.
State its position in the periodic table?
How does the electronic configuration of an atom relate to its position in the modern periodic table?
State the modern periodic law for classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
What is meant in the periodic table by a period?
Name the cation and the anion in the salt – calcium sulphate
Give the symbol and valency of the following element and radical.
Hydroxide
Give the chemical formula of sodium hydroxide
State the number of elements in Period 1 of the Periodic Table.
State the number of elements in Period 3 of the Periodic Table.
How were elements arranged in the long form of the periodic table or the Modern Periodic Table?
The modern periodic table is divided into which blocks?
The modern periodic table has 1 to 7 periods.
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.
Explain structure of modern periodic table in short.
Identify gas A in the following experiment.
The element which has the least tendency to lose electrons is ______
Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to the same group?
An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.
- Identify the element X
- Write the electronic configuration of X
- Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?
- What would be the nature (acidic/ basic) of oxides formed?
- Locate the position of the element in the Modern Periodic Table.
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
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
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 |
Which of the element is a Metalloid?
State the group and period, of the element having three shells with three electrons in valence shell.
Answer the following in respect of element \[\ce{_16^32S}\].
Give its electronic configuration.
