Question

Which of the following is the incorrect representation of the formation of molecules in Lewis dot structures?

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

$\bullet$ In Lewis symbol, the nucleus and the inner shell electrons are represented by the symbol of the element. While, the valence electrons are represented as dots around the symbol of the element.
$$\begin{array}{cc}Element& Numberofvalenceelectrons\\ Magnesium& 2\\ Fluorine& 7\\ Sodium& 1\\ Chlorine& 7\\ Carbon& 4\\ Hydrogen& 1\end{array}$$

Since, sodium has only one valence electron thus, the lewis symbol of sodium will be:
$Na\cdot$
Hence, the lewis dot structure of sodium is given incorrect.