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प्रश्न
The following electronic configuration of elements shows highest oxidation state
पर्याय
3d54s2
3d54s1
3d104s2
3d104s1
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उत्तर
3d54s2
Explanation:
The oxidation state of an element depends on the number of electrons it can lose, especially from its outermost orbitals (valence electrons).
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संबंधित प्रश्न
Name the radioactive element in lanthanoids.
Give the electronic configuration of europium (Z = 63).
Which of the following statements are FALSE about lanthanoids?
(I) They have lower heat of atomization than transition metals
(II) They are soft metals with silvery white colour and densities of about 7 g cm−3.
(III) They react with water to give the metal hydroxide and oxygen gas.
(IV) They form hydroxides, which are covalent and basic.
The electronic configuration of transition element 'X' in +3 oxidation state is [Ar] 3d4. What is its atomic number?
When lanthanoids (Ln) are heated to about 2800 K with carbon, the carbides with general formula ____________ are obtained.
Which is the INCORRECT property of lanthanoids?
Which element among the following lanthanoids has the smallest atomic radius?
The observed electronic configuration of promethium (atomic number 61) is ____________.
Which of the following properties is NOT of lanthanoids?
Identify the formula of lanthanoid oxide formed when lanthanoid (Ln) is burnt in oxygen.
Give the properties of Lanthanoids.
Lanthanoids and actinoids resemble in ______.
Which of the following factors may be regarded as the main cause of lanthanoid contraction?
Identify the last element in lanthanoid series.
Write expected and observed electron configurations of 58Ce.
Eu (Z = 63) and Yb (Z = 70) show + 2 oxidation state. Explain.
What are the physical properties of lanthanoids?
Write two uses of lanthanoids.
Define actinoid contraction.
