Consider the following ionization enthalpies of two elements 'A' and 'B'. Element Ionization enthalphy kJ / mol 1 st 2 nd 3 rd A 899 1757 14847 B 737 1450 7731 Which of the following statements is correct?

Both 'A' and 'B' belong to group-2 where 'B' comes below 'A'.

Both 'A' and 'B' belong to group-1 where 'A' comes below 'B'.

Both 'A' and 'B' belong to group-2 where 'A' comes below 'B'.

Both 'A' and 'B' belong to group-1 where 'B' comes below 'A'.

Match List-I with List-II List - I (Elements) List - II (Properties) (a) Ba ( i ) Organic solvent soluble compounds (b) Ca ( ii ) Outer electronic configuration 6 s 2 (c) Li ( iii ) Oxalate insoluble in water (d) Na ( iv ) Formation of very strong monoacidic base Choose the correct answer from the options given below:

(a)-(ii), (b)-(iii), (c)-(i) and (d)-(iv)

(a)-(iv), (b)-(i), (c)-(ii) and (d)-(iii)

(a)-(iii), (b)-(ii), (c)-(iv) and (d)-(i)

(a)-(i), (b)-(iv), (c)-(ii) and (d)-(iii)

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Which pair of the following chlorides do not impart colour to the flame?

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Important Questions on The s-Block Elements

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

Ion having highest hydration enthalpy among the given alkaline earth metal ions is:

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

s-block element which cannot be qualitatively confirmed by the flame test is

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

A piece of

Mg

ribbon is heated to redness in nitrogen atmosphere and the treated with water. The gas evolved is

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

Which one of the following oxide dissolves in both hydrochloric acid and sodium hydroxide?

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

The ion having the highest mobility in aqueous solution is

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

A metal

' M'

readily gives

{MSO}_{4},

which is soluble in water. It forms its oxide

M 0

which is amphoteric. It forms an insoluble hydroxide

M (OH)_{2},

which is soluble in

NaOH

solution. The

M

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

The element whose salts cannot be detected by flame test is.

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

Match List I with List II

List I		List II
Elements		Colour imparted to the flame
A	$K$	I	Brick Red
B	$Ca$	II	Violet
C	$Sr$	III	Apple Green
D	$Ba$	IV	Crimson Red

Choose the correct answer from the options given below:

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present?

HARD

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

The correct order of melting point is

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

Consider the following ionization enthalpies of two elements 'A' and 'B'.

Element	Ionization enthalphy $(kJ / mol)$
	$1^{st}$	$2^{nd}$	$3^{rd}$
A	899	1757	14847
B	737	1450	7731

Which of the following statements is correct?

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

The pair of

s

-

block metals, which gives crimson colour to the flame is:

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

Valence shell electronic configuration of fourth element of group-

2

in periodic table is

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

The alkaline earth metal nitrate that does not crystallise with molecules is:

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

Match List-I with List-II

	List - I (Elements)		List - II (Properties)
(a)	$Ba$	$(i)$	Organic solvent soluble compounds
(b)	$Ca$	$(ii)$	Outer electronic configuration $6 s^{2}$
(c)	$Li$	$(iii)$	Oxalate insoluble in water
(d)	$Na$	$(iv)$	Formation of very strong monoacidic base

Choose the correct answer from the options given below:

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

The correct order of density is

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>Physical Properties of Group 2 Elements

The hydration energy of