Are these statements true or false? 1. two sigma bonds comprise a double bond. 2. a triple bond consists of one pi bond and two sigma bonds. 3. bonds formed from atomic s orbitals are always sigma bonds. 4. a pi bond restricts rotation about the sigma-bond axis. 5. a pi bond consists of two pairs of electrons. 6. end-to-end overlap results in a bond with

1) False

2) False

3) True

4) True

5) False

Explanation:

1. Two sigma bonds comprise a double bond: False

Two sigma bonds are not possible between two atoms . There will always be one pi bond or two bonds with one sigma bond

2. A triple bond consists of one pi bond and two sigma bonds.

Two sigma bonds are not possible between two atoms . There will always be one pi bond or two bonds with one sigma bond

3. Bonds formed from atomic s orbitals are always sigma bonds.  True

There is always an head to head overlapping possible with s orbital

4. A pi bond restricts rotation about the sigma-bond axis.

True.

5. A pi bond consists of two pairs of electrons.

False

Each bond can have one pair of electrons

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa