Periodic Trends

How many valence electrons does chlorine have?

• 3

• 7

• 17

• 5

The distance from the nucleus to the outermost electron is the....

• Atomic Radius

• Electronegativity

• Electron Affinity

• Ionization Energy

The energy needed to REMOVE 1 electron is the....

• Atomic Radius

• Electronegativity

• Electron Affinity

• Ionization Energy

The energy released when an electron is ADDED is the....

• Atomic Radius

• Electronegativity

• Electron Affinity

• Ionization Energy

How much an atom attracts and bonds with electrons is the....

• Atomic Radius

• Electronegativity

• Electron Affinity

• Ionization Energy

If you ADD an electron shell, the atomic radius

• Increases

• Decreases

• Stays the same

Atomic radius increases...

• Left across a period

• Right across a period

• Up a group

• Down a group

ionization energy increases...

• Left across a period

• Right across a period

• Up a group

• Down a group

Elements in Group 16 have the same...

• Mass Number

• Atomic Number

• Valence Electrons

• Electron Shells

Why is Mg smaller than Na

• Mg has more electrons

• Mg has more electron shells

• Mg has less electron shells

• Mg has less electrons