Nitrogen has five valence electrons. Draw the structure of the nitrogen molecule (N2). Class 9

Nitrogen has five valence electrons. Draw the structure of the nitrogen molecule (N₂). Class 9

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Question 1.

Nitrogen has five valence electrons. Draw the structure of the nitrogen molecule (N₂). Class 9

Answer:

Each nitrogen atom has 5 valence electrons and needs 3 more electrons to complete its octet. So, two nitrogen atoms share three electrons each, forming a nitrogen molecule with a triple bond.

Structure: N≡N (triple bond between two nitrogen atoms)

In terms of electron sharing: each nitrogen atom contributes 3 electrons to form 3 shared pairs. Each nitrogen atom also has 1 lone pair of electrons (the remaining 2 valence electrons that are not shared).

The nitrogen molecule can be represented as: N≡N: where each nitrogen has one lone pair and shares three electron pairs.

Question 2.

The atomic number of fluorine is 9. Explain the formation of the fluorine molecule (F₂). Class 9

Answer:

The atomic number of fluorine is 9. Its electronic configuration is 2, 7 - meaning fluorine has 7 electrons in its valence shell (second shell). It needs 1 more electron to complete its octet. Each fluorine atom shares one electron with another fluorine atom to form a fluorine molecule (F₂). The two atoms are joined by a single covalent bond (one shared pair of electrons). The molecule can be represented as F-F.