Radius of Ions
Define: ion
An atom with a charge
Identify the following as ionic or covalent: MgCl2
Ionic
How do you determine the polarity of a bond?
Find the electronegativity difference
What does the acronym SNAP stand for?
Symmetrical = Nonpolar
Asymmetrical = Polar
What does BARF stand for?
Break (bonds) = Absorb (energy)
Release (energy) = Form (bonds)
What is the charge of an atom that gains 3 electrons?
-3
Identify the following as ionic or covalent: CH4
Covalent
What type of bond is the bond between Oxygen and Hydrogen?
Polar Covalent
Which of the following molecules is asymmetrical?
CO2, NH3, F2, CH4
NH3
Is energy released or absorbed in the following reaction:
H2 --> H+ + H+
break = absorb
What is the charge of an atom that loses 2 electrons?
+2
Which one of these compounds contains BOTH ionic and covalent bonds?
LiCl, H2O, Na3PO4, CO2
Na3PO4
What type of bond is the bond between Lithium and Fluorine?
Ionic
Which of the following molecules is nonpolar?
HCl, Br2, NH3, H2O
Br2
Define electronegativity in your own words.
An atom's attraction for electrons
How does the radius of an atom change when it gains an electron?
The radius increases
What is the formula for the following compound: Sulfur Dioxide
SO2
What type of bond is the bond between Hydrogen and Bromine?
polar covalent
Is this molecule polar or nonpolar?
CCl4
Nonpolar
Which is the most electronegative atom?
F, Na, S, Cl
F (Fluorine)
How does the radius of an atom change when it loses an electron?
The radius decreases.
What is the formula for the following compound: Barium Fluoride
BaF2
The most polar bond is found in a molecule of:
HI, HBr, HCl, HF
HF
Which nonpolar molecule contains polar bonds?
CH4, H2, CF4, Br2
CF4
Describe the energy change that occurs as bonds are formed in a reaction.
When bonds are formed, energy is released.