EASY

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Why lithium sulphate is insoluble in water?

Important Questions on The s-Block Elements

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:

EASY

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

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

EASY

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

Which of the following elements mostly form covalent compounds?

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;

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

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

Identify the correct statement from the following.

MEDIUM

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

Alkali metals

(M)

dissolve in liquid

{NH}_{3}

to give

MEDIUM

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

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

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

The incorrect statement is:

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

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

EASY

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

Chemical properties of

L i

and

M g

are similar because :

MEDIUM

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

One mole of magnesium nitride on the reaction with an excess of water gives

MEDIUM

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

L i

does not resemble with other alkali metals in following properties

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 represents a correct sequence of reducing power of the following elements ?

Why lithium sulphate is insoluble in water?

Important Questions on The s-Block Elements

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