Different chemical and physical properties.

Same physical but different chemical properties.

EASY

Earn 100

Explain why boron and silicon show similar properties.

Important Questions on Some p-Block Elements

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

The correct statements among I to III regrading group 13 element oxides are,
(I) Boron trioxide is acidic.
(II) Oxides of aluminum and gallium are amphoteric.
(III) Oxides of indium and thallium are basic.

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

The correct order of catenation is:

MEDIUM

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

When metal

M

is treated with

NaOH

, a white gelatinous precipitate

X

is obtained, which is soluble in excess of

NaOH

. Compound

X

when heated strongly gives an oxide which is used in chromatography as an adsorbent. The metal

M

MEDIUM

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Sodium borohydride upon treatment with iodine produces a Lewis acid

(X),

which on heating with ammonia produces a cyclic compound

(Y)

and a colorless gas

(Z) . X, Y

and

Z

are

MEDIUM

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

The relative order of electronegativity of

C, Ge

, and

Pb

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Which one of the following elements is unable to form

{MF}_{6}^{3 -}

ion?

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Which of these statements is not true ?

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

A group 13 element

^{'} X^{'}

reacts with chlorine gas to produce a compound

{XCl}_{3} . {XCl}_{3}

is electron deficient and easily reacts with

{NH}_{3} to form {Cl}_{3} X \leftarrow {NH}_{3}

adduct; however,

{XCl}_{3}

does not dimerize. X is:

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

The correct order of bond enthalpy (

kJ {mol}^{- 1}

) is:

MEDIUM

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

The stability of +1 oxidation state among

Al, Ga, In

and

Tl

increases in the sequence:

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Identify the correct statements

I)

Germanium exists only in traces.

II)

The order of electronegativity of

Si, Ge, Sn

Sn > Ge > Si

III)

All group

14

elements are available in solid state

MEDIUM

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Which statement is incorrect in context with Anthracite?

MEDIUM

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

The element that does not show catenation is

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Assertion :

Si - Si

bonds are much weaker than

Si - O

bonds.
Reason : Silicon forms double bonds with itself.

MEDIUM

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Aluminium is obtained from aluminium oxide by electrolysis.
Name the element used to make the electrodes in the electrolytic cell.

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Which of the following is a semiconductor?

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

C

and

Si

have:

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Explain why is there a phenomenal decrease in ionization enthalpy from carbon to silicon?

EASY

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Properties of the elements are given below.
Where would you locate the following element in the periodic table?
An element which is tetravalent and forms the basis of organic chemistry.

HARD

Chemistry>Inorganic Chemistry>Some p-Block Elements>Boron

Explain the following :

Carbon shows catenation property but lead does not.

Explain why boron and silicon show similar properties.

Important Questions on Some p-Block Elements

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