MEDIUM

Earn 100

$A :$ $P$ can form ${PF}_{5}$ , but $N$ cannot form ${NF}_{5}$ .

$R :$ $N$ is more electronegative than that of fluorine.

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Important Questions on The p-Block Elements

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

C_{60},

an allotrope of carbon contains

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Assertion: Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity.

Reason: Hybridization of carbon in diamond and graphite are

s p^{3}

and

s p^{2}

respectively.

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Identify the incorrect statement :

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Explain the following property of group 16 elements:

Allotropy

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Due to

pπ - pπ

bonding interactions, nitrogen for

N_{2}

but phosphorus forms and does not form a diatomic molecule.

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

White phosphorous

P_{4}

has the following characteristics

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

The following statements concern elements in the periodic table. Which of the following is true?

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Phosphorus pentoxide

(P_{2} O_{5})

is the starting material for phosphate esters used as surfactants and extraction agents.

P_{2} O_{5}

is extensively used as

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

The element that does NOT exhibits allotropy is-

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Which among the group -15 elements does NOT exist as tetra atomic molecule?

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Of the following compounds, the most acidic is:

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

The first ionisation energies (in

{kJmol}^{- 1}

) of four consecutive elements of the second period are given in the options. The first ionisation energy of nitrogen is

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

With respect to group 15 elements, answer the following :

Comment on the trend in ionisation enthalpy giving reason.

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Which among the following does not form polyhalide ion?

HARD

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Based on the compounds of group 15 elements, the correct statement(s) is (are)

HARD

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

The reaction of

H_{3} N_{3} B_{3} C l_{3} (A)

with

L i B H_{4}

in tetrahydrofuran gives inorganic benzene

(B)

. Further, the reaction of

(A)

with

(C)

leads to

H_{3} N_{3} B_{3} {(M e)}_{3}

. Compounds

(B)

and

(C)

respectively, are:

HARD

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

Among the following, the correct statement(s) is(are)

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

In the long form of the periodic table, the valence shell electronic configuration of

5 s^{2} 5 p^{4}

corresponds to the element present in:

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

The correct option from below is

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements>Atomic and Physical Properties of Group 15 Elements

An element

X

belongs to

4^{th}

period and

15^{th}

group of the periodic table. Which one of the following is true regarding order electronic configuration of

X .

It has

A: P can form PF5, but N cannot form NF5 . R: N is more electronegative than that of fluorine.

Important Questions on The p-Block Elements

Learn and Prepare for any exam you want !

$A :$ $P$ can form ${PF}_{5}$ , but $N$ cannot form ${NF}_{5}$ .

$R :$ $N$ is more electronegative than that of fluorine.