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प्रश्न
Although fluorine is more electronegative than oxygen, but the ability of oxygen to stabilise higher oxidation states exceeds that of fluorine. Why?
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उत्तर
The electronic configuration of fluorine is \[\ce{1s^2 2s^2 2p^5}\]. Thus it can form only one bond as it has only one unpaired electron. Electronic configuration of oxygen is \[\ce{1s^2 2s^2 2p^6 3s^2 3p^6}\].
It may be mentioned that oxygen also has vacant d-orbitals along with two 3p orbitals containing single electron. Thus, oxygen has greater bond formation capacity. In other words, it has greater ability to stabilize higher oxidation states.
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संबंधित प्रश्न
ln which pair highest oxidation states of transition metals are found:
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Cu+ ion is unstable in aqueous solution.
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Ti4+ is colourless whereas V4+ is coloured in an aqueous solutions.
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Give reasons for the following:
The transition metals generally form coloured compounds.
Which among the following transition metal has the lowest melting point?
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(i) \[\ce{Co^{2+}}\]
(ii) \[\ce{Cr^{2+}}\]
(iii) \[\ce{Mn^{2+}}\]
(iv) \[\ce{Cr^{3+}}\]
When an oxide of manganese (A) is fused with KOH in the presence of an oxidising agent and dissolved in water, it gives a dark green solution of compound (B). Compound (B) disproportionates in neutral or acidic solution to give purple compound (C). An alkaline solution of compound (C) oxidises potassium iodide solution to a compound (D) and compound (A) is also formed. Identify compounds A to D and also explain the reactions involved.
On the basis of the figure given below, answer the following questions:

- Why Manganese has lower melting point than Chromium?
- Why do transition metals of 3d series have lower melting points as compared to 4d series?
- In the third transition series, identify and name the metal with the highest melting point.
The element with atomic number 53 belongs to
The element with atomic number 46 belongs to
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(Round off to the nearest integer).
[Given: `sqrt3 = 1.73, sqrt2 = 1.41`]
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Reason (R): The ability of oxygen to form multiple bonds to metals.
A transition element X has an electronic configuration [Ar]4s23d3. Predict its likely oxidation states.
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