Question

The table compares the number of electrons in two unknown neutral atoms.

Comparison of Electrons
Atom Number of Electrons
A9
D11
Use this information to determine the number of valence electrons in the atoms. Which of the following correctly compares the stability of the two atoms?
O Both are unreactive.
O Both are highly reactive.
OA is unreactive and D is reactive.
OA is reactive and D is unreactive.

Answer 1

both are highly reactive

Step-by-step explanation:

took the test and got it right

Answer 2

Answer: Both are highly reactive.

Step-by-step explanation:

A is fluorine, which only needs to gain one more electron to have a full valence shell. Thus, it is reactive.

D is sodium, which only needs to lose one electron to have a full valence shell. Thus, it is also reactive.