Atomic Structure Test - A

Question 1

17. What is the correct electron arrangement for sulfur? ( Hint : Think about electron shells! )

Answer 1

2 - 8 - 6 ( packet 2 concept 3 pg. 14 )

Question 2

32. Which of the following elements would be the least reactive? 
A. Iodine
B. Silicon
C. Silver
D. Argon

Answer 2

Silicon ( packet 2 concept 3 pg. 13 )

Question 3

46. In each period, how does the number of electrons in each kind of atom change from left to right between Groups 1 and 2? Explain how you know.

Answer 3

As you go right from Group 1 to Group 2, the number of valence electrons increases from 1 to 2. 
* 1st level : 2e-
* 2nd level : 8e- 
* 3rd level : 8e- ( for our purpose ) 
* 4th level : 18e- ( for our purpose )
( packet 2 concept 3 pg. 14 )

Question 4

52. d. This element is in family with the most reactive nonmetals and had 4 energy levels. It must be _________________.

Answer 4

Bromine ( Br) ( packet 2 concept 3 pg. 13 ; periodic table)