An atom has the electron configuration shown below. How many valence electrons are in this atom? Captionless Image
2
3
4
6
What charge would you expect on an ion of this fictitious atom?
Captionless Image
+3, cation
+5, cation
-5, anion
-3, anion
Which occurrence explains why noble gases are essentially unreactive?
Dipole Interactions
VSEPR Theory
Dispersion Forces
Octet Rule
A covalent bond occurs when are shared between two atoms.
electrons
protons
neutrons
dipoles.
A substance conducts electricity well and has a boiling point of 1478 °C. Is this likely an ionic or covalent substance?
Not enough information to answer.
ionic
covalent
Select all the compounds listed below that are covalent compounds.

B

C

D

A
Captionless Image

A

B

C

D
Captionless Image
Trihocus Dipocus
Dihocus Tripocus
Hocus (II) Pocus
Hocus (III) Pocus
Two nonmetal Halloween elements react to form the compound TriTrick DiTreat. What is the formula? Trick = X and Treat = Y

C

D

B

A
Write the formula for Candycorn Pumpkinate. Candycorn (Cc) has a charge of +3 and pumpkinate (PkO) a charge of -2.

A

B

C

D
Which statement best describes the atomic structure of metals?
Valence electrons packed in a lattice arrangement around cations.
Valence electrons packed in a lattice arrangement around anions.
Closely packed cations with loosely held valence electrons.
Loosely packed cations with tightly held valence electrons.
Which of the following properties is NOT explained by metallic bonding?
Crystalline structures
Malleabilty
Ductility
Thermal conductivity
What is the ionic charge of element X in the compound XP? Phosphorus is in group 15 on the periodic table.
1+
1-
3+
3-
is not reactive with only 2 electrons in its valence shell.
Krypton
Helium
Neon
Xenon
How many electrons are shared in the double bonds in the structural formula shown below?
Captionless Image
2
4
6
8
Option 5
How many lone PAIRS are shown in the molecule below?
Captionless Image
none
2
4
8
A molecule of XY (2 nonmetals) is polar because
X is a metal so exhibits magnetic properties.
X and Y are both ions.
it is ionic and all ionic bonds are polar.
the X atom is able to attract the shared electrons more strongly than a Y atom.