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Elements of group 14 exhibit oxidation s...

Elements of group 14 exhibit oxidation state of

A

`+4` only

B

`+2 and +4` only

C

`+1 and +3 only`

D

`+2` only

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The correct Answer is:
B
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Elements of group 14 (a) exhibit oxidation state of +4 only (b) exhibit oxidation state of +2 and +4 (c) form M^(2–)" and "M^(4+) ions (d) form M^(2+)" and "M^(4+) ions

Which element of group 13 exhibits +1 oxidation state

The heavier members of 13 and 14 groups besides the group oxidation state also show another oxidation state. Down the group (darr) , the stability of higher oxidation state increases. This concept which is commonly called inert pair effect has been used to explain many physical and chemical properties of the element of these groups. Heavier members of group 13 exhibit oxidation state.

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

Which one of the following elements does exhibit +1 oxidation state as well ? AI, B, Ca, TI, Be.

The element that exhibits negative oxidation state in IIIA group is

Which transition elements exhibit +8 oxidation state

Name a lanthanoid element which exhibits +4 oxidation state besides +3 oxidation state.

Which transition element does not exhibit variable oxidation state?

Oxygen almost invariably exhibits oxidation state of -2 but the other members of family exhibit negative as well as positive oxidation states of +2, + 4 and +6 . Explain.

NCERT FINGERTIPS ENGLISH-PRACTICE PAPER 2-Practice Paper 2
  1. The bond order of a molecule is given by

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  2. Permanent hardness is due to presence of soluble salts of Mg and Ca in...

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  3. Mark out the correct increasing order of radius.

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  4. DeltaH("neutralisation") is always

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  5. The pH of blood is

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  6. Which of the following is according to Boyle's law?

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  7. pH of a 1.0xx10^(-8) M solution of HCl is

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  8. The substance used as a adsorbentt in the column

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  9. Elements of group 14 exhibit oxidation state of

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  10. With rise in temperature, viscosity of a liquid

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  11. Air contains 21% of oxygen by volume. The number of moles of O(2) pres...

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  12. The ratio of average speed of an oxygen molcule to the RMS speed of a ...

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  13. The kinetic enerrgy of 4 mole sof nitrogen gas at 127^(@)C is (R=2" ca...

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  14. Out off N(2)O,SO(2),I(3)^(+),I(3)^(-),H(2)O,NO(2)^(-),N(3)^(-), the li...

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  15. In which of the following ionisation processes, the bond order has inc...

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  16. Which of the following structure is correctly drawn according to funda...

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  17. Back bonding in BF(3) does not afect

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  18. Ammonium carbamate when heated tto 200^(@)C gives a mixture of NH(3) a...

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  19. For the reaction, A((g))+2B((g))hArr 3C((g))+3((g)),K(p)=0.05" atm at ...

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  20. Consider the following reaction, (i) CO(3)^(2-)+H(2)OhArrHCO(3)^(-)+...

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