In which of the following oxyacids, phos...

In which of the following oxyacids, phosphorus shows highest oxidation state?

A

`H_(4)P_(2)O_(7)`

B

`H_(3)PO_(3)`

C

`H_(4)P_(2)O_(5)`

D

`H_(4)P_(2)O_(6)`

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Knowledge Check

Valency and oxidation number are different for an element. Valency of carbon is generally 4, however, the oxidation state may be-4,-2,0, +2,-1, etc. In the compounds containing carbon, hydrogen and oxygen, the oxidation number of carbon can be calculated as, Oxidation number of carbon =(2n_o - n_H)/( n_c) where, n_(H), n_o and n_c are number of respective atoms. Which of the following compounds of carbon has highest oxidation state?

A

`CH_4`

B

`CH_3 OH`

C

`CH_2 O`

D

`HCOOH`

In which of the following compounds does hydrogen have an oxidation state of -1?

A

`CH_4`

B

`NH_3`

C

HCl

D

`CaH_2`

Nitrogen shows different oxidation states in different oxides. In which of the following oxides, nitrogen is in +4 oxidation state? NO , N_2 O , N_2 O_3 , NO_2

A

NO

B

`N_2O`

C

`N_2O_3`

D

`NO_2`

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Fluorine does not show higher positive oxidation states. Why?

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