Q. \( \)lewis structure for \( \text{Na} \).\(\ \)

Answer

Goal: Draw the Lewis structure for \( \text{Na} \) (sodium).

Valence electrons: Sodium has electron configuration \(3s^1\), so it has \(1\) valence electron.

Lewis symbol:

\[
\text{Na}\,\cdot
\]

That single dot represents the one valence electron.

Common ionic form: Sodium often forms \( \text{Na}^+ \) by losing that electron, giving:

\[
\text{Na}^+
\]

(No dots because the \(3s\) electron is lost.)

Detailed Explanation

To draw the Lewis structure for sodium nitride, \(\text{Na}\,^{-}\), you first need to understand what “\(\text{Na}\)” is and what charge is implied.

Important clarification: If the species is written as \(\text{Na}\) only, the Lewis structure is different than if it is written as \(\text{Na}^{-}\) (a sodium anion). Your prompt says “\(\text{na}\)” but the usual Lewis-structure question for “na” is commonly actually for \(\text{Na}\) or \(\text{Na}^{+}\). I will provide the Lewis structures for the most common possibilities:

Below are all three cases.


1) Lewis structure for neutral sodium atom, \(\text{Na}\)

Step 1: Find valence electrons.

Sodium (group 1) has \(1\) valence electron.

Step 2: Draw the symbol and place the valence electron as a dot.

Neutral \(\text{Na}\) has no overall charge.

Result:

\(\text{Na}\) with one dot (one valence electron):

\(\bullet\text{Na}\) (or \(\text{Na}\) with one dot around it)


2) Lewis structure for sodium ion, \(\text{Na}^{+}\)

Step 1: Determine electrons after ion formation.

Sodium forms a \(+1\) ion by losing its one valence electron.

So the ion has \(0\) valence electrons.

Step 2: Draw the symbol with the charge.

Since there are no valence electrons, you draw only the ion with brackets and the charge.

Result:

\(\text{Na}^{+}\) in Lewis form: \([\text{Na}]^{+}\) with no dots.


3) Lewis structure for sodium anion (rare/charge-mismatched case), \(\text{Na}^{-}\)

Step 1: Count valence electrons for \(\text{Na}^{-}\).

Neutral \(\text{Na}\) has \(1\) valence electron.

If it becomes \(\text{Na}^{-}\), it gains one electron.

So it would have \(2\) valence electrons.

Step 2: Place \(2\) dots on the symbol.

The ion would be \(-1\) overall, so you show the charge.

Result:

\([\text{Na}]^{-}\) with two valence electrons as dots.


Final answer (most likely intended): If your question is the common Lewis structure for sodium ions in ionic compounds, the answer is:

\([\text{Na}]^{+}\) with no valence electrons (no dots).

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General Chemistry FAQs

What is the Lewis structure for sodium, \( \text{Na} \)?

Sodium is a Group 1 metal with 1 valence electron in its neutral atom. Write \( \text{Na} \) with one dot to show the valence electron: \( \text{Na}\cdot \). No other bonding dots are needed.

Why does sodium form \( \text{Na}^+ \) and what does its Lewis symbol look like?

\( \text{Na} \) loses its single valence electron to achieve a stable noble-gas configuration. The Lewis symbol for \( \text{Na}^+ \) has no valence dots: \( \text{Na}^+ \). It corresponds to the neon electron arrangement.

How many valence electrons are in neutral sodium?

Neutral sodium \( \text{Na} \) has 1 valence electron because it is in Group 1. In a Lewis symbol, it is shown as one dot around \( \text{Na} \).

How many valence electrons does \( \text{Na}^+ \) have?

\( \text{Na}^+ \) has 0 valence electrons (it has lost the single outer electron). In Lewis-dot notation, you show no dots on \( \text{Na}^+ \).

What is the Lewis electron-dot configuration for sodium chloride, \( \text{NaCl} \)?

\( \text{Na} \) transfers its electron to \( \text{Cl} \), giving \( \text{Na}^+ \) (no dots) and \( \text{Cl}^- \) (8 dots, a full octet). This is often shown as ionic Lewis symbols rather than shared bonds.

Is a shared-bond Lewis structure ever correct for \( \text{Na} \) with a nonmetal?

For \( \text{Na} \) with most nonmetals like \( \text{Cl} \), the common model is ionic bonding: electron transfer. A shared-bond structure is not the typical Lewis interpretation for \( \text{NaCl} \); you use \( \text{Na}^+ \) and \( \text{Cl}^- \).
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