Test - Atomic Structure

Question 1

14. Which of the following elements would be the least reactive?

Answer 1

Argon (Periodic Table of Elements)

Question 2

26. An unstable nucleus results from too many few

Answer 2

Neutrons NB 7 PG 9

Question 3

31. When looking at the halogens on the periodic table, how does the number of the valence electrons change as the energy level is increased?

Answer 3

The total number of valence electrons does not change. It remains at 7. NB 7 PG 9

Question 4

Classify the following elements as metals, nonmetals, or metalloids. Ar, H, Al, Na, Te, F.

Answer 4

Metals: Al, Na, Nonmetals: Är, H, F, Metalloids: Te

Question 5

How do you spell the element that keeps your teeth clean?

Answer 5

FlUOrine