Question

Q13. A covalent bond is formed by the
valence electrons.
of​

Answer 1

• Forming Covalent Bonds

1. Covalent bonds are a class of chemical bonds where valence electrons are shared between two atoms, typically two nonmetals.
2. The formation of a covalent bond allows the nonmetals to obey the octet rule and thus become more stable.
3. For example: A fluorine atom has seven valence electrons.

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Answer 2

Forming Covalent Bonds:-

Covalent bonds are a class of chemical bonds where valence electrons are shared between two atoms, typically two nonmetals. The formation of a covalent bond allows the nonmetals to obey the octet rule and thus become more stable.

For example:

• A fluorine atom has seven valence electrons. If it shares one electron with a carbon atom (which has four valence electrons), the fluorine will have a full octet (its seven electrons plus the one it is sharing with carbon).
• Carbon will then have five valence electrons (its four and the one its sharing with fluorine). Covalently sharing two electrons is also known as a “single bond.” Carbon will have to form four single bonds with four different fluorine atoms to fill its octet. The result is CF⁴ or carbon tetrafluoride.

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