Writing Formulas
Potassium Chloride
KCl
K2S
Potassium Sulfide
Draw the electron dot diagram for Beryllium
One dot above and one below Be.
What type of bond occurs where the valence electrons move freely around a structure of positively charged ions (they do not belong to any particular ion). Choices: Ionic, Covalent, Metallic.
Metallic
How many valence electrons does Helium have?
2! (it's full!)
Beryllium Fluoride
BeF2
Ba3(PO4)2
Barium Phosphate
Draw the Electron Dot Diagram for Sulfur
Two dots at the top, two at the bottom, one on each side (total of 6)
What type of bond has high melting and boiling points because the bond is so strong due to opposite charges attracting?
Ionic
Is Bromine a Cation or Anion?
Anion
Aluminum Phosphide
AlP
Mg3N2
Magnesium Nitride
Draw a Fluorine to Fluorine Covalent Bond using dots for unbonded electrons and lines for bonded electrons.
F-F (and 6 dots around the remaining F for each)
Any positively charged ion created when an atom gives/donates valence electron(s) is called ...? *POSITIVELY charged
Cation
What is the common charge of a carbon ion? *careful!
+4 AND/OR -4
Ammonium Sulfite
(NH4)2SO3
Sr(NO2)2
Strontium Nitrite
Draw a Nitrogen bond when it bonds with itself to be "full". (N2) Use dots for unbonded electrons and lines for bonded electrons.
Three lines connecting both N's and then two dots with each N that are unbonded.
What type of bond is present in this formula?
NO2
Covalent (both are Nonmetallic)
In the formula Li2SO4, because SO4 has more than one element (Sulfur and Oxygen), it is considered a __ ion. (vocabulary word-- does NOT begin with A or C).
Polyatomic
Lead (lV) Bisulfite
Pb(HSO3)4
Fe2(SO4)3
Iron (lll) Sulfate
HCl -- Draw the structure that shows dots for electrons that are unbonded and lines for electron pairs that are bonded.
One line from H to Cl, H has NO dots around it. Chlorine has 6 dots
Name the four elements that commonly don't follow the Octet Rule.
Hydrogen, Helium, Lithium, Beryllium.
Answer EITHER:
A. Atoms of the same element that bond with another of the same element in a covalent bond are called __ elements.
B. When two metals create a mixture physically but do not chemically bond, they are called __.
A. Diatomic
B. Alloys