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because they are stable

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Q: Why noble gas show variable oxidation state?
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why do alkali metals not show plus 2 oxidation state?

why do alkali metels not show +2 oxidation state


When do halogens show 1 and -1 oxidation states?

When halogens bind to more electropositive elements (compared it itself), they show -1 oxidation state. When halogens bind to more electronegative elements (compared it itself), they show +1 oxidation state.


Why d block elements show variable oxidation state?

Due to the comparable energies of ns and the (n-1)d orbitals, the d-electrons also take part in the reactions.


Why Mn does not show an oxidation state 5 plus?

It is rarely, but manganese can show the valence 5+.


When does iron show the 4th oxidation state?

Never. iron shows either +2 or +3 oxidation state but in Fe3O4 its oxidation state is seems to +4 but it is actually mixture of one moles FeO and one mole Fe2O3 , (FeO.Fe2O3 = Fe3O4).


Family characteristic actinides have?

All are radioactive and all of them can show the oxidation state of +3


Name the metal that has highest oxidation?

Ruthenium and Osmium both show the oxidation state of +8, which is highest known for any single metal ion.


Why alkali metals do not show 2 oxidation state?

Because they have only one electron in their valency shell. The second oxidation state would require the atom to lose an electron from its penultimate shell which is full.


What do half reactions show?

They show the oxidation an reduction halves of a reaction


Why do transition metals have variable oxidation states?

Transition metals can move electrons between the outer shell and the d d orbital. For example, copper can either lose its 2 s electrons or move one of those s electrons into d orbital, which is one electron short of being full.


How do you write oxidation numbers?

Oxidation is found by putting the unknown oxidation number as x and all other values of oxidation number are added, and are put equal to the total charge on the species. Any constiuents ion's oxidation number can be put equal to the charge. Oxygen always show -2 oxidation state except peroxide, AND superoxides, an other exception is also there i.e. OF2. Alkali metals always show +1 oxd state. Eartheline earth metal show +2 oxd state. Eg- In KMnO4, +1 for K, x for Mn, all O's with -2 each Thus, (+1) + (x) + (4*-2) = 0, 0 for KMnO4 is a neutral species. Here, x = +7. Oxd state or number of Mn in KMnO4 is 7. For more details, contact me at ishuswami@gmail.Com


Which metal has an oxidation number of 3?

Aluminium, Gallium,Indium, Thallium show O.S. of +3. Since Ununtrium is also placed in group 13, it might show O.S of +3 as well. In 3d transition series, Scandium,Titanium, Vanadium,Chromium,Manganese,Iron,Cobalt,Nickel show the oxidation state of three. In 4d transition series, Yttrium, Zirconium,Niobium, Molybdenum,Technetium,Ruthenium, Rhodium, Silver. In 5d transition series, Hafnium,Tantalum,Tungsten, Rhenium,Osmium,Iridium, Gold,Platinum show O.S. of +3. Also, All the Lanthanides elements show oxidation state of +3. Among the Actinides, Actinium, Protactinium, Uranium,Neptunium,Plutonium,Americium,Curium, Berkelium, Californium,Einsteinium,Fermium,Mendelevium,Nobelium and Lawrencium show oxidation state of +3. Apart from these, Meitnerium is also predicted to show O.S. of +3 .