Question

Как найти ковалентную химическую связь?

Answer 1

Какую именно? Их существует две. Неполярная ковалентная и полярная. Неполярная - из атомов одного неметалла. Например: F2, O2, Cl2
Ковалентная полярная ТОЖЕ из атомов НЕМЕТАЛЛОВ, но РАЗНЫХ. Т.е. в другом случае будет к примеру H2O. Водород - неме, кислород - неме. Вот тебе и ковалентная полярная. 

Answer 2

Для этого достаточно знать свойства и химическую формулу молекул, если эта молекула состоит из атомов разных элементов, то связь будет полярной, если из одного элемента, то не полярной. Также важно помнить, что ковалентные связи в целом могут возникать только среди не металлов, это обусловлено самим механизмом ковалентных связей .

Answer 3

How to Find a Covalent Chemical Bond?

To find a covalent chemical bond, you need to understand the concept of covalent bonding and the factors that contribute to its formation. Here's a step-by-step guide:

1. Understand Covalent Bonding: Covalent bonding occurs when two atoms share electrons to achieve a stable electron configuration. This type of bonding is commonly observed between nonmetals.

2. Identify the Atoms: Determine which atoms are involved in the bond. Covalent bonds typically form between atoms of similar electronegativity, meaning they have similar tendencies to attract electrons.

3. Determine the Number of Valence Electrons: Valence electrons are the electrons in the outermost energy level of an atom. To find the number of valence electrons for an atom, refer to the periodic table. The group number of the element indicates the number of valence electrons it has.

4. Check for Octet Rule: The octet rule states that atoms tend to gain, lose, or share electrons to achieve a stable electron configuration with eight valence electrons. However, some elements, such as hydrogen and helium, can achieve stability with fewer than eight electrons.

5. Count the Electrons: Count the total number of valence electrons for all the atoms involved in the bond.

6. Determine the Number of Bonds: Divide the total number of valence electrons by two to determine the number of covalent bonds needed to achieve stability. Each bond consists of two electrons.

7. Form the Bonds: Start by forming single bonds between the atoms. Each bond involves the sharing of two electrons. If there are remaining electrons, form double or triple bonds as needed.

8. Check for Stability: After forming the bonds, check if each atom has achieved a stable electron configuration. Each atom should have a full outermost energy level or a stable electron configuration with fewer than eight electrons for hydrogen and helium.

By following these steps, you can find and understand covalent chemical bonds. Remember that covalent bonding is just one type of chemical bond, and there are other types, such as ionic and metallic bonds.

Please note that the information provided above is a general guide to finding covalent chemical bonds. For more specific examples and detailed explanations, it is recommended to refer to reliable chemistry textbooks or educational resources.