Periodic Trends

The (majority of) noble gases have how many valence electrons?

• 1

• 2

• 7

• 8

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NGSS.HS-PS1-1

What is it called when an increase in the number of protons increases the nuclear pull on the valence electrons?

• Electron Shielding Effect

• Valence Pull

• Proton Pull

• Proton Shielding Effect

Which of the following is in the same period as calcium (Ca)?

• Krypton (Kr)

• Strontium (Sr)

• Zirconium (Zr)

• Sodium (Na)

The ____ shows you the number of energy levels (rings of electrons) in an atom.

• Group

• Family

• Protons

• Period

Tags

NGSS.MS-PS1-1

Which of the following has the greatest electronegativity?

• He

• O

• N

• Cs

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following has the largest atomic radius?

• He

• O

• N

• Cs

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NGSS.HS-PS1-1

Which of the following has the greatest ionization energy?

• He

• O

• N

• Cs

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

The element most chemically similar to chlorine is ___.

• I

• Ar

• S

• Na

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Mendeleev arranged the periodic table by ___.

• proton number

• atomic mass

• atomic number

• neutrons

Identify the element: 4 valence electrons, 3 energy levels

• Si

• Ga

• Be

• Al

Tags

NGSS.HS-PS1-1