Question

Встановіть відповідність між типом зв'язків та їхньої кількості в молекулі сполуки. НС≡С-СН3 сигма-зв'язки? пі-зв'язки?

Answer 1

У молекулі сполуки НС≡С-СН3 (це сполука етин), кількість сигма-зв'язків і пі-зв'язків можна розподілити так:

Сигма-зв'язки (σ-зв'язки): 3
Пі-зв'язки (π-зв'язки): 2

Отже, в молекулі етину є 3 сигма-зв'язки і 2 пі-зв'язки.

Answer 2

Types of Chemical Bonds and their Quantities in a Compound

In a molecule, different types of chemical bonds can exist, including sigma (σ) bonds and pi (π) bonds. These bonds are formed between atoms and determine the structure and properties of the compound.

Sigma (σ) Bonds: - Sigma (σ) bonds are formed by the overlap of atomic orbitals along the internuclear axis. - They are the strongest type of covalent bond and allow free rotation around the bond axis. - Sigma bonds can be formed between s-s orbitals, s-p orbitals, p-p orbitals, or hybrid orbitals. - In the given compound, the NS≡C-CH3, the NS bond is a sigma (σ) bond.

Pi (π) Bonds: - Pi (π) bonds are formed by the sideways overlap of p orbitals that are parallel to each other. - They are weaker than sigma bonds and restrict rotation around the bond axis. - Pi bonds are typically formed between p-p orbitals or hybrid orbitals. - In the given compound, the NS≡C-CH3, the C≡C bond is a pi (π) bond.

To summarize, in the molecule NS≡C-CH3, there is one sigma (σ) bond between the N and S atoms, and one pi (π) bond between the C atoms.