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Which allotrope of phosphorus is most reactive?

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Important Questions on The p-Block Elements

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

When copper is heated with conc.

H N O_{3}

it produces:

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Which of the following is kept under water ?

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

The product obtained as a result of a reaction of nitrogen with

C a C_{2}

is:

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Good reducing nature of

H_{3} P O_{2}

is attributed to the presence of:

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

The product formed by the reaction of

{SOCl}_{2}

with white phosphorus is

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Iodine reacts with concentrated

H N O_{3}

to yield

Y

along with other products. The oxidation state of iodine in

Y

, is:

HARD

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

The nitrogen containing compound produced in the reaction of

H N O_{3}

with

P_{4} O_{10}

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Strong reducing behaviour of

H_{3} P O_{2}

is due to:

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Which one of the following is formed (mainly) when red phosphorus is heated in a sealed tube at

803 K ?

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Concentrated

{HNO}_{3}

oxidise white phosphorus into which substance?

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

The pair that contains two

P - H

bonds in each of the oxoacids is:

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

The

P - P - P

bond angle in white phosphorus is

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

The total number of compounds having at least one bridging oxo group among the molecules given below is
$N_{2} O_{5}, P_{4} O_{6}, P_{4} O_{8}, H_{4} P_{2} O_{5}, H_{5} P_{3} O_{10}, H_{2} S_{2} O_{3}, H_{2} S_{2} O_{5}$

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Identify the correct statement from the statements given below.

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

The compound(s) which generate(s)

N_{2}

gas upon thermal decomposition below

300^{o} C

is (are)

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Among the oxides of nitrogen:

N_{2} O_{3}, N_{2} O_{4} a n d N_{2} O_{5};

the molecule

(s)

having nitrogen - nitrogen bond is/are:

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Which of the following compounds has a

P - P

Bond?

HARD

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

Heating white phosphorus with conc.

NaOH

solution gives mainly

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

White phosphorus, when heated with conc.

NaOH

solution in an inert atmosphere of

{CO}_{2}

, forms phosphine and a sodium salt of oxoacid of phosphorus,

' X'

. The oxidation state of phosphorus in

' X'

HARD

Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Phosphorus

White phosphorus on reaction with concentrated

N a O H

solution in an inert atmosphere of

C O_{2}

gives phosphine and compound

(X) . (X)

on acidification with

H C l

gives compound

(Y) .

The basicity of compound

(Y)

is:

Which allotrope of phosphorus is most reactive?

Important Questions on The p-Block Elements

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