Naming
How do they form
Characteristics
Review
Miscellaneous
100
PBr3
Phosphorus tribromide
100
The two types of atoms that form covalent bonds
Nonmetal and nonmetal
100
The number of electron pairs shared in a double bond
two
100
In an ionic bond, the metal _________ its electron(s) to the nonmetal.
Transfers
100
The valence number and group name of this element
Seven (7), Halogens
200
HCl
Hydrogen monochloride
200
Valence electrons are ___________ in a covalent bond.
Shared
200
Name ONE property of covalent compounds.
Low melting and boiling points, flammable, poor conductors of heat and electricity
200
The shorthand electron configuration for scandium
[Ar] 4s2 3d1
200
ONE reason this Lewis structure incorrect?
Hydrogen can only make ONE bond.
Carbon can make FOUR bonds.
Oxygen can make TWO bonds.
300
S2F7
Disulfur heptafluoride
300
The number of covalent bonds that phosphorus would form
Three
300
H (2.1) and Se (2.4)
Polar, Nonpolar or Ionic
Nonpolar; 2.4-2.1 = 0.3 (less than 0.4)
300
Name an element with similar properties to calcium
Be, Mg, Sr, Ba, or Ra
300
The list of diatomic elements
H2, N2, F2, O2, I2, Cl2, Br2
400
N2O
Dinitrogen monoxide
400
The reason atoms form bonds with other atoms
Octet rule; stability; be like noble gases
400
The meaning of the HONC rule
Hydrogen and Halogens (1 bond), Oxygen (2 bonds), Nitrogen (3 bonds), Carbon (4 bonds)
400
Oxygen gas forms a ___________ bond.
Double
400
The name of Cl2
chlorine gas or chlorine
500
C4H8
Tetracarbon Octahydride
500
Which of these is a/are covalent compound(s)?
HBr, CaCl2, NO, CuCl3, PbF2
HBr, NO
500
The difference between a polar and nonpolar covalent bond
Polar (atoms share electrons UNEQUALLY). Nonpolar (atoms share electrons EQUALLY)
500
The number of unshared pairs in the Lewis dot structure for CH3F
Three
500
The diatomic element that forms a triple bond
N2