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CHXI10:THE S-BLOCK ELEMENTS

315897 Which physical property in the alkali metal group increases with atomic number?

1 Melting point

2 Electronegativity

3 Hydration enthalpy

4 Density

Explanation:

Density of the alkali metals almost increases on moving down the group. However, a small decrease in density is observed from $Na$ to $K$ , due to abnormal increase in atomic size from $Na$ to $K$ .

CHXI10:THE S-BLOCK ELEMENTS

315898 Among the following properties the one that is not true for an alkali metal is

1 low atomic volume

2 low ionization enthalpy

3 low density

4 low electronegativity.

CHXI10:THE S-BLOCK ELEMENTS

315899 The increasing order of atomic radius for the elements $Na, Rb, K$ and $Mg$ is

1

Na < K < Mg < Rb

2

K < Na < Mg < Rb

3

Mg < Na < K < Rb

4

Rb < K < Mg < Na

CHXI10:THE S-BLOCK ELEMENTS

315897 Which physical property in the alkali metal group increases with atomic number?

1 Melting point

2 Electronegativity

3 Hydration enthalpy

4 Density

Explanation:

Density of the alkali metals almost increases on moving down the group. However, a small decrease in density is observed from $Na$ to $K$ , due to abnormal increase in atomic size from $Na$ to $K$ .

CHXI10:THE S-BLOCK ELEMENTS

315898 Among the following properties the one that is not true for an alkali metal is

1 low atomic volume

2 low ionization enthalpy

3 low density

4 low electronegativity.

CHXI10:THE S-BLOCK ELEMENTS

315899 The increasing order of atomic radius for the elements $Na, Rb, K$ and $Mg$ is

1

Na < K < Mg < Rb

2

K < Na < Mg < Rb

3

Mg < Na < K < Rb

4

Rb < K < Mg < Na

CHXI10:THE S-BLOCK ELEMENTS

315897 Which physical property in the alkali metal group increases with atomic number?

1 Melting point

2 Electronegativity

3 Hydration enthalpy

4 Density

Explanation:

Density of the alkali metals almost increases on moving down the group. However, a small decrease in density is observed from $Na$ to $K$ , due to abnormal increase in atomic size from $Na$ to $K$ .

CHXI10:THE S-BLOCK ELEMENTS

315898 Among the following properties the one that is not true for an alkali metal is

1 low atomic volume

2 low ionization enthalpy

3 low density

4 low electronegativity.

CHXI10:THE S-BLOCK ELEMENTS

315899 The increasing order of atomic radius for the elements $Na, Rb, K$ and $Mg$ is

1

Na < K < Mg < Rb

2

K < Na < Mg < Rb

3

Mg < Na < K < Rb

4

Rb < K < Mg < Na