What is the atomic number of Argon?
Atoms Practice Exam Question 1

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Science, Physics, Chemistry
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6th Grade - University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
17
18
19
20
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many electrons does Potassium have?
20
21
19
18
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the mass number of Potassium is 39 and it has 19 protons, how many neutrons does it have?
19
21
18
20
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass number of Argon if it has 18 protons and 22 neutrons?
38
39
40
41
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many electrons are in the third shell of Argon?
8
7
6
9
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