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प्रश्न
The elements in which electrons are progressively filled in 4f-orbital are called ______.
पर्याय
actinoids
transition elements
lanthanoids
halogens
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उत्तर
The elements in which electrons are progressively filled in 4f-orbital are called lanthanoids.
Explanation:
The lanthanides which belong to the f-block elements are the elements where 4f-orbitals are filled progressively.
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संबंधित प्रश्न
Which one of the following statements related to lanthanons is incorrect?
Which of the following lanthanoid ions is diamagnetic?
Assertion: Ce4+ is used as an oxidizing agent in volumetric analysis.
Reason: Ce4+ has the tendency of attaining +3 oxidation state.
Which one of the following is not correct?
What are actinoids? Give three examples.
Compare lanthanoids and actinoids.
Out of Lu(OH)3 and La(OH)3 which is more basic and why?
Why do zirconium and Hafnium exhibit similar properties?
Which of the following is not an actinoid?
The electronic configuration of gadolinium (Atomic number 64) is ______.
In the modern periodic table, elements are arranged in order of increasing atomic numbers which is related to the electronic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, s, p, d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. In accordance with the Arfbau principle, the seven periods have 2, 8, 8, 18, 18, 32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids are placed at the bottom of the main body of the periodic table.
The element with atomic number 57 belongs to ______.
In the modern periodic table, elements are arranged in order of increasing atomic numbers which is related to the electronic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz, s, p, d and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. In accordance with the Arfbau principle, the seven periods have 2, 8, 8, 18, 18, 32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f-block elements, called lanthanoids and actinoids are placed at the bottom of the main body of the periodic table.
The elements with atomic numbers 35, 53 and 85 are all ______.
Illustrate by taking examples of transition elements and non-transition elements that oxidation states of elements are largely based on electronic configuration.
Electronic configuration, [Ne] 3s2 3p4 is for ______.
