Match List-I with Match List-II List-I (Metal) List-II (Emitted light wavelength nm ) (A) Li (I) 670 . 8 (B) Na (II) 589 . 2 (C) Rb (III) 780 . 0 (D) Cs (V) 455 . 5 Choose the most appropriate answer from the options given below

A - I , B - II , C - III , D - IV

A - III , B - II , C - I , D - IV

A - III , B - I , C - II , D - IV

A - IV , B - II , C - I , D - III

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 (Salt) List-II (Flame colour wavelength) (a) LiCl (i) 455 . 5 nm (b) NaCl (ii) 670 . 8 nm (c) RbCl (iii) 780 . 0 nm (d) CsCl (iv) 589 . 2 nm Choose the correct answer from the options given below:

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

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

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

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

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)

EASY

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Increasing order of density is

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Important Questions on Elements of Group 1 and Group 2

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason $R$ . Assertion $A$ : $LiF$ is sparingly soluble in water. Reason $R$ : The ionic radius of ${Li}^{+}$ ion is smallest among its group members, hence has least hydration enthalpy.

In the light of the above statements, choose the most appropriate answer from the options given below.

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

The ionic species having the largest size is

HARD

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

Match List-I with Match List-II

	List-I (Metal)		List-II (Emitted light wavelength $(nm)$ )
(A)	$Li$	(I)	$670.8$
(B)	$Na$	(II)	$589.2$
(C)	$Rb$	(III)	$780.0$
(D)	$Cs$	(V)	$455.5$

Choose the most appropriate answer from the options given below

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

Identify the weakest oxidizing agent among the following

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

The correct order of hydration enthalpy is

HARD

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

Choose the correct order of density of the alkali metals

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

Which of the following has the lowest melting point?

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

For alkali metals, which of the following trends is incorrect?

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

What is the colour of the flame on heating potassium in the flame of a Bunsen burner?

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Lithium salts are hydrated.
Reason (R) : Lithium has higher polarising power than other alkali metal group members.

In the light of the above statements, choose the most appropriate answer from the options given below :

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 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?

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

Match List - I with List - II.

List-I (Salt)		List-II (Flame colour wavelength)
(a)	$LiCl$	(i)	$455.5 nm$
(b)	$NaCl$	(ii)	$670.8 nm$
(c)	$RbCl$	(iii)	$780.0 nm$
(d)	$CsCl$	(iv)	$589.2 nm$

Choose the correct answer from the options given below:

EASY

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

The correct order of density is

HARD

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 2 Elements

Which of the following statement is incorrect?

MEDIUM

Chemistry>Inorganic Chemistry>Elements of Group 1 and Group 2>Physical Properties of Group 1 and 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