Unit 2 Review

What is the general trend in IONIZATION ENERGY as you move from top to bottom in the periodic table?

• Increases

• Decreases

• Stays the same

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What is the general trend in IONIZATION ENERGY as you move from left to right across the periodic table?

• Increases

• Decreases

• Stays the same

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NGSS.HS-PS1-1

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A portion of the periodic table of elements is reproduced here. Based on their relative positions, what conclusion can be drawn about these elements regarding their ATOMIC RADIUS?

• All the elements have the same size.

• Aluminum (Al) is bigger than Argon (Ar)

• Chromium (Cr) is twice as big as potassium (K).

• Calcium (Ca) is much smaller than beryllium (Be)

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NGSS.HS-PS1-1

Which of the following differences in electronegativity is predicted from the relative positions of the two elements on the periodic table?

• Silicon has an electronegativity equal to carbon.

• Selenium has a lower electronegativity than oxygen.

• Carbon has a lower electronegativity than boron.

• Chlorine has a higher electronegativity than fluorine.

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NGSS.HS-PS1-1

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Silicon (Si) has how many valence electrons?

• 2

• 4

• 6

• 8

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NGSS.HS-PS1-1

Tellurium (Te) has how many valence electrons?

• 2

• 4

• 6

• 8

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Helium has how many valence electron(s)?

• 1

• 2

• 4

• 6

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Arsenic (As) has how many valence electrons?

• 3

• 5

• 7

• 9

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NGSS.HS-PS1-1

Which property of an atom describes the amount of energy needed to remove an electron?

• Electronegativity

• Atomic Size

• Ionization Energy

• Reactivity

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NGSS.HS-PS1-2

Which property of an atom describes the ability of an atom to attract electrons to itself?

• Electronegativity

• Atomic Radius

• Ionization Energy

• Reactivity

Tags

NGSS.HS-PS1-1