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प्रश्न
Illustrate by taking examples of transition elements and non-transition elements that oxidation states of elements are largely based on electronic configuration.
उत्तर
The electronic configuration of \[\ce{Cr}\] = 1s2 2s2 2p6 3s2 3p6 4s1 3d10
The electronic configuration of \[\ce{Cr}\] after losing one electron= 1s2 2s2 2p6 3s2 3p6 3d10
The electronic configuration of \[\ce{F}\] = 1s2 2s2 2p6 3s2 3p5
The electronic configuration of \[\ce{F}\] after gaining one electron= 1s2 2s2 2p6 3s2 3p6
From the above electronic configuration we can see that chromium will achieve stable electronic configuration after losing one 4s electron and fluorine will achieve stable electronic configuration after gaining one electron. So, the oxidation of chromium will be +1 and that of fluorine will be –1.
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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?
The actinoid elements which show the highest oxidation state of +7 are ____________.
Which one of the following is not correct?
Justify the position of lanthanides and actinides in the periodic table.
Compare lanthanoids and actinoids.
Out of Lu(OH)3 and La(OH)3 which is more basic and why?
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 ______.
Electronic configurations of four elements A, B, C and D are given below:
(A) 1s22s22p6
(B) 1s22s22p4
(C) 1s22s22p63s1
(D) 1s22s22p5
Which of the following is the correct order of increasing tendency to gain electron:
Electronic configuration, [Ne] 3s2 3p4 is for ______.
