Question
Lithium nitride is an ionic compound. Draw a diagram which shows its formula, the charges
on the ions and the arrangement of the valency electrons around the negative ion.
Use
Use o for an electron from a nitrogen atom.
on the ions and the arrangement of the valency electrons around the negative ion.
Use
Use o for an electron from a nitrogen atom.
Ask by Vega Lawson. in Pakistan
Jan 21,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
Lithium Nitride (Li₃N) Diagram
- Formula: Li₃N
- Ions:
- Li⁺: 3 lithium ions, each with a +1 charge.
- N³⁻: 1 nitride ion with a -3 charge.
- Electron Arrangement:
- Each lithium ion donates one electron (
). - The nitrogen ion accepts three electrons (
), totaling eight valence electrons.
- Each lithium ion donates one electron (
Diagram:
Li⁺ Li⁺ Li⁺
x x x
\ | /
\ | /
\ | /
[ N ]³⁻
/ | | | \
o o o o o o o o
Explanation:
- Lithium Ions (Li⁺): Three lithium atoms each donate one electron.
- Nitride Ion (N³⁻): Accepts three electrons, forming a stable octet.
This arrangement shows the ionic bonding in lithium nitride, where electrons are transferred from lithium to nitrogen to achieve stable electron configurations.
Solution
Certainly! Below is a textual diagram representing lithium nitride (Li₃N), illustrating the formula, the charges on the ions, and the arrangement of valence electrons around the nitride ion (N³⁻). In this diagram:
-
represents an electron donated from a lithium (Li) atom. -
represents an electron from a nitrogen (N) atom.
Chemical Formula and Ionic Charges
- Formula: Li₃N
- Ionic Charges:
- Lithium ions (Li⁺): Each lithium atom loses one electron, resulting in a +1 charge.
- Nitride ion (N³⁻): The nitrogen atom gains three electrons, resulting in a -3 charge.
Electron Donation and Acceptance
Each of the three lithium atoms donates one electron (
Textual Diagram
Li⁺ Li⁺ Li⁺
x x x
\ | /
\ | /
\ | /
[ N ]³⁻
/ | | | \
o o o o o o o o
Explanation of the Diagram
-
Lithium Ions (Li⁺):
- There are three lithium ions, each represented by Li⁺.
- Each lithium ion donates one electron (
), which is shown as coming from each Li⁺.
-
Nitride Ion (N³⁻):
- The nitrogen atom is at the center, represented by [ N ]³⁻.
- It receives one electron from each of the three lithium ions, totaling three additional electrons.
- The nitrogen ion now has eight valence electrons, represented by the
symbols arranged around it, achieving a stable octet configuration.
Valence Electron Arrangement Around Nitride Ion
The nitrogen ion has an octet of electrons arranged around it to satisfy the electron configuration:
o o
\ /
o -- N -- o
/ \
o o
In the textual diagram above, the
Summary
- Li₃N consists of three Li⁺ ions and one N³⁻ ion.
- Each lithium atom donates one electron to the nitrogen atom.
- The nitrogen ion achieves a stable octet by accepting three electrons, one from each lithium.
This arrangement exemplifies the ionic bonding in lithium nitride, where electron transfer leads to the formation of positively charged lithium ions and a negatively charged nitride ion, resulting in a stable ionic compound.
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Simplify this solution Beyond the Answer
Lithium nitride has the chemical formula
In the diagram, you would represent the lithium ions as
- The three lithium atoms would each contribute one electron, represented as
. - The nitride ion can be depicted with three pairs of electrons, shown as
for nitrogen’s three additional valence electrons.
The electrons from lithium would cluster around the nitride ion, showcasing how these ions interact:
