Step #1Boys move to the left side of the front of the room. Bring your entrance cards with you.

Girls move to the right side of the front of the room. Bring your entrance cards with you.

Step # 2• Within your

group form three subgroups based on your hair length (short, medium, long) and create three lines based on your hair length.

Step # 3• Now look at your

“entrance cards” and within the three subgroups that you just made form rows based on increasing ability to attract money and the energy required to remove your cell phone.

Lowest Highest

Where do they belong???Ability to attract money: 4.00Energy required to remove cell phone: ????

Ability to attract money: 3.75Energy required to remove cell phone: 15.62

Go back to your seats…

Atomic Radius• Atomic radius is simply the radius of the atom,

an indication of the atom's volume.• Atomic radius is one-half the distance

between the two nuclei in a molecule consisting of two identical atoms.

Electronegativity

Electronegativity is the ability of an atom to attract a neighboring

atom's electrons.

Ionization Energy

• Ionization energy is the amount of energy required to remove an electron.

Ionic Radius vs. Atomic Radius

• Metals - the atomic radius of a metal is generally larger than the ionic radius of the same element.

• Why? Generally, metals lose electrons to achieve the octet. This creates a larger positive charge in the nucleus than the negative charge in the electron cloud, causing the electron cloud to be drawn a little closer to the nucleus as an ion.

Ionic Radius vs. Atomic Radius

• Non-metals - the atomic radius of a non-metal is generally smaller than the ionic radius of the same element.

• Why? Generally, non-metals gain electrons to achieve the octet. This creates a larger negative charge in the electron cloud than positive charge in the nucleus, causing the electron cloud to 'puff out' a little bit as an ion.