Log in
Sign up for FREE
arrow_back
Library
Unit 2 Lesson 5 & PreTest Review
By Kristina Thibodeaux
star
star
star
star
star
Share
share
Last updated 2 months ago
5 questions
Add this activity
Required
1
Required
1
Required
1
1
Question 4
4.
1
Question 1
1.
What is the correct AZ notation for an element withy 12 protons, 13 neutrons, and 13 electrons?
25
12
Mg
-1
25
12
Mg
+1
12
24
Mg
-1
25
12
Mg
Question 2
2.
How many electrons does this element have:
19
9
F
-2
11
2
9
7
Question 3
3.
What element has 7 electrons and a +2 charge?
Helium
Boron
Fluorine
Nitrogen
Question 5
5.