What is the number of protons that the element in this image contain? Options: 14, 7, 15, 18
9- Electrons in Atoms and the Periodic Table

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Chemistry
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University
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Hard
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1.
FLASHCARD QUESTION
Front
Back
7
2.
FLASHCARD QUESTION
Front
Beryllium has how many protons?
Back
4
3.
FLASHCARD QUESTION
Front
What element is this? Options: Helium, Hydrogen, Argon, Silver
Back
Argon
4.
FLASHCARD QUESTION
Front
What does an atom's period tell us?
Back
Number of shells
5.
FLASHCARD QUESTION
Front
What does an atom's group tell us?
Back
Number of valence electrons
6.
FLASHCARD QUESTION
Front
Element in period 3 classified as a metal: Boron (B), Sodium (Na), Argon (Ar), Silicon (Si)
Back
Sodium (Na)
7.
FLASHCARD QUESTION
Front
Electromagnetic waves vary in:
Back
wavelength and frequency.
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