Let's analyze each statement:

1. A σ bond is weaker than a π bond: This statement is incorrect. A sigma (σ) bond is stronger than a pi (π) bond. This is because a sigma bond is formed by the head-on overlapping of atomic orbitals, which creates a stronger bond than the sideways overlapping that forms a pi bond.

2. HF is less polar than HI: This statement is incorrect. HF is more polar than HI. This is because the difference in electronegativity between hydrogen and fluorine is greater than the difference between hydrogen and iodine, making HF more polar.

3. There are 4 coordinate bonds in NH4+ ion: This statement is incorrect. In the NH4+ ion, there are four covalent bonds, not coordinate bonds.

4. In SF6 all S–F bond lengths are identical: This statement is correct. In SF6, sulfur is surrounded by six fluorine atoms in an octahedral arrangement, and all the S–F bonds are identical in length.

So, the correct answer is "In SF6 all S–F bond lengths are identical".

Question

Let's analyze each statement:

1. A σ bond is weaker than a π bond: This statement is incorrect. A sigma (σ) bond is stronger than a pi (π) bond. This is because a sigma bond is formed by the head-on overlapping of atomic orbitals, which creates a stronger bond than the sideways overlapping that forms a pi bond.

2. HF is less polar than HI: This statement is incorrect. HF is more polar than HI. This is because the difference in electronegativity between hydrogen and fluorine is greater than the difference between hydrogen and iodine, making HF more polar.

3. There are 4 coordinate bonds in NH4+ ion: This statement is incorrect. In the NH4+ ion, there are four covalent bonds, not coordinate bonds.

4. In SF6 all S–F bond lengths are identical: This statement is correct. In SF6, sulfur is surrounded by six fluorine atoms in an octahedral arrangement, and all the S–F bonds are identical in length.

So, the correct answer is "In SF6 all S–F bond lengths are identical".

Knowee AI · Accepted Answer

Let's analyze each statement:

1. A σ bond is weaker than a π bond: This statement is incorrect. A sigma (σ) bond is stronger than a pi (π) bond. This is because a sigma bond is formed by the head-on overlapping of atomic orbitals, which creates a stronger bond than the sideways overlapping that forms a pi bond.

2. HF is less polar than HI: This statement is incorrect. HF is more polar than HI. This is because the difference in electronegativity between hydrogen and fluorine is greater than the difference between hydrogen and iodine, making HF more polar.

3. There are 4 coordinate bonds in NH4+ ion: This statement is incorrect. In the NH4+ ion, there are four covalent bonds, not coordinate bonds.

4. In SF6 all S–F bond lengths are identical: This statement is correct. In SF6, sulfur is surrounded by six fluorine atoms in an octahedral arrangement, and all the S–F bonds are identical in length.

So, the correct answer is "In SF6 all S–F bond lengths are identical".

Which of the following statement is correct ?A σ bond is weaker than a π bondHF is less polar than HIThere are 4 coordinate bonds in NH4+ ionIn SF6 all S–F bond lengths are identical

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