Elemental Descriptions
Electron Counting
Periodic Trends
Mistaken Configurations
Mass, Moles, and Atoms
Nomenclature
100
This is the smallest alkaline earth metal.
What is Be?
100
The number of electrons a d subshell can hold.
What is 10?
100
The higher electron affinity: Cl or Cl-
What is Cl?
100
The error, if any, with the ground state electronic configuration shown?
What is nothing?
100
This is the number of grams of O2 in 3.5 moles of O2.
What is ~32 g/mol?
100
This is the chemical name of NaBr.
What is sodium bromide?
200
The element with the valence shell configuration 4f145d106s1.
What is Au?
200
The number of electrons the n=4 shell can hold.
What is 32?
200
The higher electron affinity: Na or I
What is I?
200
The error, if any, in the following configuration.
What is the 4s subshell should be filled before the 4p subshell?
200
This is the molar mass of Ca(NO3)2 to three significant figures.
What is 164 g/mol?
200
This is the chemical name of H2O.
What is dihydrogen monoxide?
300
The halogen with the highest ionization energy.
What is F?
300
The number of electrons a 7s orbital can hold.
What is 2?
300
The atom/ion with the larger radius in each of the following pairs:
Li, K
I, I-
Al, Al3+
What is:
K
I-
Al
300
The error, if any, in the following configuration.
What is electrons in the 4s orbital have the same four quantum numbers?
300
This is the number of moles of hydrogen in one mole of CH3COOH.
What is 4?
300
This is the chemical formula for iron(III) sulfate.
What is Fe2(SO4)3?
400
The element with 13 more electrons than Ar.
What is Ga?
400
The number of valence electrons in Zr.
What is 4?
400
This is arrangement of atoms (Bi, Cs, Ba) from low to high ionization energy.
What is Cs, Ba, Bi?
400
BONUS: The error with this configuration:
What is none? This configuration shows an exception due to half-filled d subshells.
400
This is the mass of F in 1.28 g of MgF2.
What is 0.781 g?
400
This is the name for LiNO3 2H2O.
What is lithium nitrate dihydrate?
500
The 3+ ion of this element has the configuration [Kr]4d9.
What is Cd3+?
500
The number of unpaired electrons in a Mn+ ion.
What is 6?
500
The term for the attraction between protons and electrons that we use to rationalize periodic table trends.
What is effective nuclear charge?
500
The error, if any, with the following configuration.
What is one electron should be added to each 4p orbital before pairing electrons?
500
This is the number of iron atoms in 3.25 grams of iron (III) hydroxide.
What is 1.83 x 1022 atoms?
500
These are two valid names for the compound HF.
What are:
hydrogen fluoride and hydrofluoric acid?