What is the atomic number of Chlorine (Cl)?
Periodic Table/Atoms 2024 test #4-review

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Science, Chemistry
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
17
2.
FLASHCARD QUESTION
Front
How many neutrons does Chlorine (Cl) have if its atomic mass is 35?
Back
18
3.
FLASHCARD QUESTION
Front
What is a period in the periodic table?
Back
A horizontal row of elements in the periodic table.
4.
FLASHCARD QUESTION
Front
What are valence electrons?
Back
Electrons in the outermost shell of an atom that determine its chemical properties.
5.
FLASHCARD QUESTION
Front
How many valence electrons does Sodium (Na) have?
Back
1
6.
FLASHCARD QUESTION
Front
What type of charge do electrons have?
Back
Negative
7.
FLASHCARD QUESTION
Front
What subatomic particle orbits the nucleus of an atom?
Back
Electrons only.
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