EASY

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Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salt are put under an electric field?

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Important Questions on The s-Block Elements

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Alkali metals

(M)

dissolve in liquid

{NH}_{3}

to give

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Both lithium and magnesium display several similar properties due to the diagonal relationship; however, the one which is incorrect is:

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Identify the ions which form hydrated chlorides from the following:

$a)$ ${Ba}^{2 +}$
$b)$ ${Li}^{+}$
$c)$ ${Sr}^{2 +}$
$d)$ ${Cs}^{+}$
$e)$ ${Mg}^{2 +}$
$f)$ ${Rb}^{+}$
$g)$ ${Ca}^{2 +}$

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

On heating,

{LiNO}_{3}

gives how many compounds among the following?

{Li}_{2} O, N_{2}, O_{2}, {LiNO}_{2}, {NO}_{2}

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Among the statements

(a) - (d),

the correct ones are:

(a)

Lithium has the highest hydration enthalpy among the alkali metals.

(b)

Lithium chloride is insoluble in pyridine.

(c)

Lithium cannot form ethynide upon its reaction with ethyne.

(d)

Both lithium and magnesium react slowly with

H_{2} O

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

From the given pairs of elements, the correct set of elements that does not possess diagonal relationship is;

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Which among the following alkali metal chloride crystallizes in form of hydrate?

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

An element

A

of group

1

shows similarity to an element

B

belonging to group

2

. If

A

has maximum hydration enthalpy in group

1

then

B

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Two elements

A

and

B

have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen to form nitrides.

A

and

B

, respectively, are :

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Identify the correct statement from the following.

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Which of the following reaction is correct?

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

The incorrect statement is:

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Alkali metals are highly reactive towards air and water and are generally kept in kerosene oil. Glove box is a sealed container filled with nitrogen gas used to handle such chemicals that are air sensitive and hazardous, Of the four pure metals - lithium, sodium, potassium, and rubidium the ones that can be stored in a glove box are:

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Which of the following elements mostly form covalent compounds?

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Which of following elements does not form amide when reacted with ammonia?

HARD

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

A metal

M

reacts with nitrogen gas to afford

M_{3} N

M_{3} N

on heating at high temperature gives back

M

and on reaction with water produces a gas

B

. Gas

B

reacts with an aqueous solution of

{CuSO}_{4}

to form a deep blue compound.

M and B

respectively are

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Complex forming tendency is more for

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

The products obtained on heating

L i N O_{3}

will be

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Pick out the statement(s) which is/are not true about the diagonal relationship of

Li

and

Mg

(i)

Polarising powers of

L i^{+} a n d {M g}^{2 +}

are almost the same.

(ii)

Li, Mg

decomposes water very fast.

(iii)

Both

L i C l

and

{MgCl}_{2}

are deliquescent.

(iv)

Li, Mg

does not form solid bicarbonates.

HARD

Chemistry>Inorganic Chemistry>The s-Block Elements>Anomalous Properties of Lithium

Which of the following properties of lithium does not show diagonal relationship with magnesium?

Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salt are put under an electric field?

Important Questions on The s-Block Elements

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