Basic Atomic Structure

Where are the neutrons found in an atom

• In the nucleus

• In shells surrounding the nucleus

Tags

NGSS.MS-PS1-1

On the periodic table, oxygen has the atomic number of 8 and a mass number of 16. How many protons does an atom of oxygen have?

• 4

• 16

• 8

• 32

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NGSS.MS-PS1-1

On the periodic table, Magnesium has the atomic number of 12 and a mass number of 24. How many protons does an atom of oxygen have?

• 12

• 24

• 36

• 32

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NGSS.MS-PS1-1

On the periodic table, Argon has the atomic number of 18 and a mass number of 40. How many neutrons does an atom of oxygen have?

• 40

• 58

• 18

• 22

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NGSS.MS-PS1-1

On the periodic table, Potassium has the atomic number of 19 and a mass number of 39. How many electrons does an atom of oxygen have?

• 58

• 19

• 39

• 20

Tags

NGSS.MS-PS1-1

How many electrons are held in the first shell of an atom? (just type a number for your answer)

What does the group number of the periodic table tell us about the electron shells?

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NGSS.HS-PS1-1