51.2k views
5 votes
Which atom has a Lewis structure with an octet?
A. Cl
B. Na
C. Ar
D. Mg

User Sarfaraz
by
9.0k points

1 Answer

4 votes

Final answer:

Argon (Ar) is the atom that has a Lewis structure with an octet.

Step-by-step explanation:

The atom that has a Lewis structure with an octet is C. Ar (Argon).

Argon (Ar) is in group 8A of the periodic table, which means it already has a full octet of valence electrons (8). Since it has a full octet, it does not need to gain or lose any electrons to achieve stability.

In contrast, atoms like Cl, Na, and Mg do not have a full octet and need to gain or lose electrons to achieve stability.

User Matthew Mott
by
8.4k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.