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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313396 The cause of periodicity of properties is

1 Increasing atomic radius

2 Increasing atomic weights

3 Number of electrons in the valency orbit

4 The recurrence of similar outer electronic configuration

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313397 Which of the following statements are not correct?
A. The electron gain enthalpy of F is more negative than that of Cl .
B. Ionization enthalpy decreases down the group in the periodic table.
C. The electronegativity of an atom depends upon the atoms bonded to it.
D. $A l_{2} O_{3}$ and NO are examples of amphoteric oxides.
Choose the most appropriate answer from the options given below:

1 A, B and D only

2 A, B, C and D

3 A, C and D only

4 B and D only

Explanation:

Electron gain enthalpy of Cl is more negative than that of F.
Electronegativity of an atom does not depend upon the atoms bonded to it.
$A l_{2} O_{3}$ is amphoteric while NO is neutral oxide.

JEE - 2023

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313398 Which of the following statements is not correct?

1 Helium has the highest first ionisation enthalpy in the periodic table.

2 Chlorine has less negative electron gain enthalpy than fluorine.

3 Mercury and bromine are liquids at room temperature.

4 In any period, atomic radius of alkali metal is the highest.

NCERT Exemplar

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313399 Among the following arrangements, the order is not according to the property indicated against it is

1 Li < Na < K < Rb : Increasing metallic radius

2 I < Br < F < Cl : Increasing electron gain enthalpy with negative sign

3 B < C < N < O : Increasing first ionisation enthalpy

4

A l^{3 +} < M g^{2 +} < N a^{+} < F^{-}

: Increasing ionic size

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313396 The cause of periodicity of properties is

1 Increasing atomic radius

2 Increasing atomic weights

3 Number of electrons in the valency orbit

4 The recurrence of similar outer electronic configuration

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313397 Which of the following statements are not correct?
A. The electron gain enthalpy of F is more negative than that of Cl .
B. Ionization enthalpy decreases down the group in the periodic table.
C. The electronegativity of an atom depends upon the atoms bonded to it.
D. $A l_{2} O_{3}$ and NO are examples of amphoteric oxides.
Choose the most appropriate answer from the options given below:

1 A, B and D only

2 A, B, C and D

3 A, C and D only

4 B and D only

Explanation:

Electron gain enthalpy of Cl is more negative than that of F.
Electronegativity of an atom does not depend upon the atoms bonded to it.
$A l_{2} O_{3}$ is amphoteric while NO is neutral oxide.

JEE - 2023

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313398 Which of the following statements is not correct?

1 Helium has the highest first ionisation enthalpy in the periodic table.

2 Chlorine has less negative electron gain enthalpy than fluorine.

3 Mercury and bromine are liquids at room temperature.

4 In any period, atomic radius of alkali metal is the highest.

NCERT Exemplar

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313399 Among the following arrangements, the order is not according to the property indicated against it is

1 Li < Na < K < Rb : Increasing metallic radius

2 I < Br < F < Cl : Increasing electron gain enthalpy with negative sign

3 B < C < N < O : Increasing first ionisation enthalpy

4

A l^{3 +} < M g^{2 +} < N a^{+} < F^{-}

: Increasing ionic size

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313396 The cause of periodicity of properties is

1 Increasing atomic radius

2 Increasing atomic weights

3 Number of electrons in the valency orbit

4 The recurrence of similar outer electronic configuration

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313397 Which of the following statements are not correct?
A. The electron gain enthalpy of F is more negative than that of Cl .
B. Ionization enthalpy decreases down the group in the periodic table.
C. The electronegativity of an atom depends upon the atoms bonded to it.
D. $A l_{2} O_{3}$ and NO are examples of amphoteric oxides.
Choose the most appropriate answer from the options given below:

1 A, B and D only

2 A, B, C and D

3 A, C and D only

4 B and D only

Explanation:

Electron gain enthalpy of Cl is more negative than that of F.
Electronegativity of an atom does not depend upon the atoms bonded to it.
$A l_{2} O_{3}$ is amphoteric while NO is neutral oxide.

JEE - 2023

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313398 Which of the following statements is not correct?

1 Helium has the highest first ionisation enthalpy in the periodic table.

2 Chlorine has less negative electron gain enthalpy than fluorine.

3 Mercury and bromine are liquids at room temperature.

4 In any period, atomic radius of alkali metal is the highest.

NCERT Exemplar

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313399 Among the following arrangements, the order is not according to the property indicated against it is

1 Li < Na < K < Rb : Increasing metallic radius

2 I < Br < F < Cl : Increasing electron gain enthalpy with negative sign

3 B < C < N < O : Increasing first ionisation enthalpy

4

A l^{3 +} < M g^{2 +} < N a^{+} < F^{-}

: Increasing ionic size

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313396 The cause of periodicity of properties is

1 Increasing atomic radius

2 Increasing atomic weights

3 Number of electrons in the valency orbit

4 The recurrence of similar outer electronic configuration

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313397 Which of the following statements are not correct?
A. The electron gain enthalpy of F is more negative than that of Cl .
B. Ionization enthalpy decreases down the group in the periodic table.
C. The electronegativity of an atom depends upon the atoms bonded to it.
D. $A l_{2} O_{3}$ and NO are examples of amphoteric oxides.
Choose the most appropriate answer from the options given below:

1 A, B and D only

2 A, B, C and D

3 A, C and D only

4 B and D only

Explanation:

Electron gain enthalpy of Cl is more negative than that of F.
Electronegativity of an atom does not depend upon the atoms bonded to it.
$A l_{2} O_{3}$ is amphoteric while NO is neutral oxide.

JEE - 2023

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313398 Which of the following statements is not correct?

1 Helium has the highest first ionisation enthalpy in the periodic table.

2 Chlorine has less negative electron gain enthalpy than fluorine.

3 Mercury and bromine are liquids at room temperature.

4 In any period, atomic radius of alkali metal is the highest.

NCERT Exemplar

CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313399 Among the following arrangements, the order is not according to the property indicated against it is

1 Li < Na < K < Rb : Increasing metallic radius

2 I < Br < F < Cl : Increasing electron gain enthalpy with negative sign

3 B < C < N < O : Increasing first ionisation enthalpy

4

A l^{3 +} < M g^{2 +} < N a^{+} < F^{-}

: Increasing ionic size