QBManager

Chemical Bonding and Molecular Structure

11929 The covalent compound $H C l$ has the ionic character as

1 The electronegativity of hydrogen is greater than that of chlorine

2 The electronegativity of hydrogen is equal to that of chlorine

3 The electronegativity of chlorine is greater than that of hydrogen

4 Hydrogen and chlorine are gases

Explanation:

(c) $H C l$ has ionic character yet it has covalent compound because electronegativity of chlorine is greater than that of hydrogen.

Chemical Bonding and Molecular Structure

11930 The correct sequence of increasing covalent character is represented by

1

L i C l < N a C l < B e C l_{2}

2

B e C l_{2} < N a C l < L i C l

3

N a C l < L i C l < B e C l_{2}

4

B e C l_{2} < L i C l < N a C l

Explanation:

(c) Order of polarising power $B e^{+ +} > L i^{+} > N a^{+}$ Hence order of covalent character $B e C l_{2} > L i C l > N a C l$ .

Chemical Bonding and Molecular Structure

11931 Bond energy of covalent $O - H$ bond in water is

1 Greater than bond energy of

H -

bond

2 Equal to bond energy of

H -

bond

3 Less than bond energy of

H -

bond

4 None of these

Explanation:

Hydrogen bond is a weak electrostatic force of attraction (van der Waal's attraction) between hydrogen atom and small sized, highly electronegative atoms. It is weaker than covalent bond. $O - H$ bond in water is a covalent bond and its bond energy is greater than that of hydrogen bond.

Chemical Bonding and Molecular Structure

11932 Solid $C H_{4}$ is

1 Molecular solid

2 Ionic solid

3 Pseudo solid

4 Does not exist

Explanation:

In $C H_{4}$ molecule there exists strong covalent bond between the atoms of each methane molecule whereas, in solid $C H$ there exists weak van der waals' forces between different methane molecules which is a characterstic of molecula solid. Therefore if we talk about solid $C H$ .

Chemical Bonding and Molecular Structure

11929 The covalent compound $H C l$ has the ionic character as

1 The electronegativity of hydrogen is greater than that of chlorine

2 The electronegativity of hydrogen is equal to that of chlorine

3 The electronegativity of chlorine is greater than that of hydrogen

4 Hydrogen and chlorine are gases

Explanation:

(c) $H C l$ has ionic character yet it has covalent compound because electronegativity of chlorine is greater than that of hydrogen.

Chemical Bonding and Molecular Structure

11930 The correct sequence of increasing covalent character is represented by

1

L i C l < N a C l < B e C l_{2}

2

B e C l_{2} < N a C l < L i C l

3

N a C l < L i C l < B e C l_{2}

4

B e C l_{2} < L i C l < N a C l

Explanation:

(c) Order of polarising power $B e^{+ +} > L i^{+} > N a^{+}$ Hence order of covalent character $B e C l_{2} > L i C l > N a C l$ .

Chemical Bonding and Molecular Structure

11931 Bond energy of covalent $O - H$ bond in water is

1 Greater than bond energy of

H -

bond

2 Equal to bond energy of

H -

bond

3 Less than bond energy of

H -

bond

4 None of these

Explanation:

Hydrogen bond is a weak electrostatic force of attraction (van der Waal's attraction) between hydrogen atom and small sized, highly electronegative atoms. It is weaker than covalent bond. $O - H$ bond in water is a covalent bond and its bond energy is greater than that of hydrogen bond.

Chemical Bonding and Molecular Structure

11932 Solid $C H_{4}$ is

1 Molecular solid

2 Ionic solid

3 Pseudo solid

4 Does not exist

Explanation:

In $C H_{4}$ molecule there exists strong covalent bond between the atoms of each methane molecule whereas, in solid $C H$ there exists weak van der waals' forces between different methane molecules which is a characterstic of molecula solid. Therefore if we talk about solid $C H$ .

Chemical Bonding and Molecular Structure

11929 The covalent compound $H C l$ has the ionic character as

1 The electronegativity of hydrogen is greater than that of chlorine

2 The electronegativity of hydrogen is equal to that of chlorine

3 The electronegativity of chlorine is greater than that of hydrogen

4 Hydrogen and chlorine are gases

Explanation:

(c) $H C l$ has ionic character yet it has covalent compound because electronegativity of chlorine is greater than that of hydrogen.

Chemical Bonding and Molecular Structure

11930 The correct sequence of increasing covalent character is represented by

1

L i C l < N a C l < B e C l_{2}

2

B e C l_{2} < N a C l < L i C l

3

N a C l < L i C l < B e C l_{2}

4

B e C l_{2} < L i C l < N a C l

Explanation:

(c) Order of polarising power $B e^{+ +} > L i^{+} > N a^{+}$ Hence order of covalent character $B e C l_{2} > L i C l > N a C l$ .

Chemical Bonding and Molecular Structure

11931 Bond energy of covalent $O - H$ bond in water is

1 Greater than bond energy of

H -

bond

2 Equal to bond energy of

H -

bond

3 Less than bond energy of

H -

bond

4 None of these

Explanation:

Hydrogen bond is a weak electrostatic force of attraction (van der Waal's attraction) between hydrogen atom and small sized, highly electronegative atoms. It is weaker than covalent bond. $O - H$ bond in water is a covalent bond and its bond energy is greater than that of hydrogen bond.

Chemical Bonding and Molecular Structure

11932 Solid $C H_{4}$ is

1 Molecular solid

2 Ionic solid

3 Pseudo solid

4 Does not exist

Explanation:

In $C H_{4}$ molecule there exists strong covalent bond between the atoms of each methane molecule whereas, in solid $C H$ there exists weak van der waals' forces between different methane molecules which is a characterstic of molecula solid. Therefore if we talk about solid $C H$ .

Chemical Bonding and Molecular Structure

11929 The covalent compound $H C l$ has the ionic character as

1 The electronegativity of hydrogen is greater than that of chlorine

2 The electronegativity of hydrogen is equal to that of chlorine

3 The electronegativity of chlorine is greater than that of hydrogen

4 Hydrogen and chlorine are gases

Explanation:

(c) $H C l$ has ionic character yet it has covalent compound because electronegativity of chlorine is greater than that of hydrogen.

Chemical Bonding and Molecular Structure

11930 The correct sequence of increasing covalent character is represented by

1

L i C l < N a C l < B e C l_{2}

2

B e C l_{2} < N a C l < L i C l

3

N a C l < L i C l < B e C l_{2}

4

B e C l_{2} < L i C l < N a C l

Explanation:

(c) Order of polarising power $B e^{+ +} > L i^{+} > N a^{+}$ Hence order of covalent character $B e C l_{2} > L i C l > N a C l$ .

Chemical Bonding and Molecular Structure

11931 Bond energy of covalent $O - H$ bond in water is

1 Greater than bond energy of

H -

bond

2 Equal to bond energy of

H -

bond

3 Less than bond energy of

H -

bond

4 None of these

Explanation:

Hydrogen bond is a weak electrostatic force of attraction (van der Waal's attraction) between hydrogen atom and small sized, highly electronegative atoms. It is weaker than covalent bond. $O - H$ bond in water is a covalent bond and its bond energy is greater than that of hydrogen bond.

Chemical Bonding and Molecular Structure

11932 Solid $C H_{4}$ is

1 Molecular solid

2 Ionic solid

3 Pseudo solid

4 Does not exist

Explanation:

In $C H_{4}$ molecule there exists strong covalent bond between the atoms of each methane molecule whereas, in solid $C H$ there exists weak van der waals' forces between different methane molecules which is a characterstic of molecula solid. Therefore if we talk about solid $C H$ .

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