Elements
PT
SI
Quantum Theory
Problems
Grab Bag
100
The element in the second group and fourth period
What is calcium?
100
The name of the group containing radium
What are alkaline earth metals?
100
The base unit for time
What is a second?
100
the number of electrons in the 3s orbital
What are 2?
100
Add and correct for sig figs
32.021 + 5.2 + 185.00
What is 222.2?
100
group name for Xenon
What is the noble gas group?
200
The number of electrons contained in one neutral atom of chromium
What is 24?
200
Identifier that best describes uranium, thorium, and protactinium
What are actinides?
200
The base unit for length
What is a meter?
200
states that every orbital of a sublevel is occupied with one electron before adding a second
What is Hund's Rule?
200
the average atomic mass for
Ne - 20 (90%)
Ne - 22 (10%)
What is 20.2?
200
3,680,000 written in scientific notation
What is 3.68 x 106?
300
The number of valence electrons in antimony (Sb)
What is 5?
300
Elements in the p block on the periodic table can all be described as
What are nonmetals?
300
The unit used for mass in chemistry
What is a gram?
300
the quantum number represented by n
What is the principal energy level?
300
molar mass of NaOH
What is 40 g/mol?
300
convert 3m to mm
What is 3000mm?
400
The number of electrons contained in this ion
What is 18?
400
The person that organized the periodic table and left spaces for elements not yet discovered
Who is Mendeleev?
400
The unit for describing molar mass
What is g/mol?
400
maximum number of electrons for the second main energy level
What is 8?
400
convert 34.6 g of H2O to mol
(watch sig figs!)
What is 1.92 mol of water?
400
an atom that has lost an electron
What is a cation?
500
The oxidation number for aluminum
What is +3?
500
The person whose work led to a periodic table based upon increasing atomic number
Who was Moseley?
500
The unit for the amount of a substance
What is a mole?
500
The lowest value of n for which a d subshell can occur
What is 3?
Note: 1 has s
2 has s, p
3 has s, p, d
500
number of atoms in 7.5 mol of Fe
(watch for sig figs!)
What is 4.5 x 1024 atoms of Fe?
500
the elements Cr, F, Ra, B in increasing electronegativity
What are Ra, Cr, B, and F?