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Unit 2 Lesson 5 & PreTest Review
By Kristina Thibodeaux
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Last updated 5 months ago
5 questions
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Question 4
4.
1
Question 1
1.
Question 2
2.
Question 3
3.
Question 5
5.
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
How many electrons does this element have:
19
9
F
-2
11
2
9
7
What element has 7 electrons and a +2 charge?
Helium
Boron
Fluorine
Nitrogen