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 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

EASY

Earn 100

The similarity in the properties of alkali metals is due to:

50% studentsanswered this correctly

Important Questions on The s-Block Elements

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 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:

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

The alkaline earth metal sulphate, which has its hydration enthalpy greater than its lattice energy is

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

The correct order of hydration enthalpies of alkali metal ions is:

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

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

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

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

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

The correct order of hydration enthalpy is

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 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

HARD

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 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

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

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

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

Which of the following metal is the most abundant in the earth's crust?

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 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 :

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

The correct order of conductivity of ions in water is:

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

The correct order of electrical conductivity of alkali metals ions in their aqueous solution for

{Cs}^{+}, K^{+}, {Na}^{+}

and

L^{+}

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

Which of the following alkali metals has the lowest melting point?

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

The ionic species having the largest size is

HARD

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

Which of the following statement is incorrect?

MEDIUM

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 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.

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

Valence shell electronic configuration of fourth element of group-

2

in periodic table is

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

Which of the following alkali metal ion in aqueous solution is the best conductor of electricity?

EASY

Chemistry>Inorganic Chemistry>The s-Block Elements>General Introduction of Group 1 Elements

The correct order of mobility of alkali metal ions in aqueous solution is-

The similarity in the properties of alkali metals is due to:

Important Questions on The s-Block Elements

Learn and Prepare for any exam you want !