Periodic Trends

Which atomic trend does the periodic table above show?

The arrow points to increasing.

• Atomic Radius

• Ionization and Ionic Radius

• Electronegativity and Atomic Radius

• Ionization and Electronegativity

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As you move down each row of the periodic table, elements gain:

• 1 shell

• 1 electron

• 1 proton

• 1 neutron

Who is credited with the development of the first periodic table of elements, arranging them based on atomic mass and chemical properties?

• John Dalton

• Marie Curie

• Ernest Rutherford

• Dmitri Mendeleev

In the periodic table, elements in the same group (column) have similar chemical behavior because they:

• Have the same number of protons

• Are in the same period

• Have the same number of valence electrons

• Have the same atomic radius

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element has the highest electron affinity, meaning it most wants to gain an electron?

• He

• Li

• Oxygen

• F

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element is likely to have the highest electronegativity?

• F

• Na

• He

• C

Tags

NGSS.HS-PS1-1

Which of the following elements do you expect to have the largest atomic radius?

• Na

• Cs

• H

• Li