Periodicity

Given the elements Cl, Ge, and K and the values 418, 1255, and 784 kJ/mol of possible first ionization energies, match the atoms with their first ionization energies.

• Cl 418 kJ/mol

  Ge 1255 kJ/mol

  K 784 kJ/mol

• Cl 784 kJ/mol

  Ge 1255 kJ/mol

  K 418 kJ/mol

• Cl 1255kJ/mol

  Ge 784 kJ/mol

  K 418 kJ/mol

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NGSS.HS-PS1-1

Given the elements N, F, and Al and the values 1.61, 3.04, and 3.98 of possible electronegativities, match the atoms with their correct electronegativities.

• N 1.61

  F 3.04

  Al 3.98

• N 3.04

  F 3.98

  Al 1.61

• N 3.98

  F 3.04

  Al 1.61

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NGSS.HS-PS1-1

Which statement explains why the radius of a lithium atom is larger than the radius of a lithium ion.

• Metals gain electrons when forming an ion

• Nonmetals gain electrons when forming an ion

• Metals lose electrons when forming an ion

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NGSS.HS-PS1-1

Which atom, Se or As, has the higher electron affinity and why?

• As, because it has a lower effective nuclear charge

• Selenium, because it does not have a stable, half-filled p subshell and adding an electron does not decrease its stability.

• Neither, because selenium and arsenic have the same electron affinity.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the order of decreasing atomic radius?

• Silicon, chlorine, sulfur

• Chlorine, sulfur, silicon

• Silicon, sulfur, chlorine

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NGSS.HS-PS1-1

The greatest increase in ionization energy for the element B comes with the removal of the ___________ electron.

• 4th

• 3rd

• 2nd

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following elements would you expect to have a positive electron affinity?

• K

• O

• Ne

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following atoms would you expect to have the largest atomic radius?

• O

• F

• Na

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NGSS.HS-PS1-1

Which of the following has a larger radius?

• chlorine anion

• chlorine atom

• chlorine cation

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NGSS.HS-PS1-1

What is the correct order of increasing electronegativity?

• O, C, N, S, P, Si, F

• F, O, N, C, S, P, Si

• Si, P, S, C, N, O, F

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2