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Element which can show +2, +3, +4, +6 an...

Element which can show `+2, +3, +4, +6` and `+7` oxidation states is

A

Cr

B

Mn

C

Co

D

V

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The correct Answer is:
C
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The element which shows both positive & negative oxidation state is :

Sulphur and rest of the elements of group 16 are less electronegative than oxygen, Therefore, their atoms cannot take electrons easily. They can acquire ns^2 np^6 configuration by sharing two electrons with the atoms of other elements and thus, exhibit +2 oxidation state in their compounds. In addition to this, their atoms have vacant d-orbitals in their valence shell to which electrons can be promoted from the p and s-orbitals of the same shell. As a result, they can show +4 and + 6 oxidation states. Like sulphur, oxygen does not show + 4 and +6 oxidation states. The reason is

Among the following element which shows shows only 'one' non-zero oxidation state is -

The atomic number of an element which can not show the oxidation state of +3 is-

Sulphur and rest of the elements of group 16 are less electronegative than oxygen, Therefore, their atoms cannot take electrons easily. They can acquire ns^2 np^6 configuration by sharing two electrons with the atoms of other elements and thus, exhibit +2 oxidation state in their compounds. In addition to this, their atoms have vacant d-orbitals in their valence shell to which electrons can be promoted from the p and s-orbitals of the same shell. As a result, they can show +4 and + 6 oxidation states. Oxygen exhibits +2 oxidation state in

Mark the element which shows only one oxidation state in its compounds

The element of Group 16, which never shows negative oxidation state is

Sulphur and rest of the elements of group 16 are less electronegative than oxygen, Therefore, their atoms cannot take electrons easily. They can acquire ns^2 np^6 configuration by sharing two electrons with the atoms of other elements and thus, exhibit +2 oxidation state in their compounds. In addition to this, their atoms have vacant d-orbitals in their valence shell to which electrons can be promoted from the p and s-orbitals of the same shell. As a result, they can show +4 and + 6 oxidation states. The oxidation state of sulphur in Na_2 S_4 O_6 is

NARAYNA-D BLOCK & TRANSITION ELEMENTS-Level-I
  1. The IP of Zr is 674kJ//"mole". The IP of Hf is

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  2. The following does not show variable valency

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  3. Element which can show +2, +3, +4, +6 and +7 oxidation states is

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  4. Maximum oxdiation state exhibited by Osmium is

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  5. Zn and Cd metals do not show varible valency because:

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  6. Each of the following ion contains vanadium the +5 oxidation state exc...

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  7. Which of the following pair of elements have same radii?

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  8. The radii (metallic) of Fe,CO and Ni are nearly same. This is due to...

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  9. Which of the following ion is coloured in its aqueous solution?

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  10. Transition metals are coloured due to the following electronic transit...

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  11. In which pair, both ions are coloured in aqueous medium

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  12. MnO(4)^(-) is intense pint colour, though Mn is (+7) oxidation state, ...

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  13. VO(4)^(-), CrO(4)^(2-) and MnO(4)^(-)are pale yellow, strong yellow an...

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  14. Which is not true statement?

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  15. The catalyst used in the oxidation of 1^(@) alcohol to aldehydes

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  16. Name the catalyst and promoter in the Haber's process for the manufact...

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  17. In a transition series, as the atomic number increases, paramagnetism

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  18. Paramagnetism is not exhibited by

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  19. The magnetic moment of the complex [Ti(H(2)O)(6)]^(3+) is

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  20. The ratio of magnetic moment of Fe(III) and Co(II) is :

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