The Periodic Table
Periodic Trends
Bonding
Moles
100
What is the chemical symbol for Mercury?
Hg
100
What are valence electrons?
The electrons in the outermost shell of an atom.
100
What do the dots in lewis dot structures represent?
Valence electrons
100
What is the molar volume of any gas at STP?
22.4 L/ mol
200
What is the difference between atomic number and atomic mass?
Atomic number is the number of protons. Atomic mass is how much the atom weighs (protons + neutrons)
200
What is the valance electron trend for the elements in group 14.
All elements in group 14 have 4 valence electrons.
200
Draw the dot structure for sulfur.
200
How many of each element is in the following compound: K2CO2
2 K (Potasium)
1 C (Carbon)
2 O (Oxygen)
300
What is the molar mass of the following element:
95.95 g/mol
300
Which element has the LOWEST electronegativity?
I, Br, Cl, F
Iodine (I)
300
What types of ion will Tl form?
cation
300
What is the molar mass of NaClO?
74.44 g/ mol
400
Which types of elements make up most of the periodic table?
metals
400
Rank the elements by increasing ionization energy:
Ca, V, Ti, Sc
Ca, Sc, Ti, V
400
Draw the bond between Sodium (Na) and Chlorine (Cl).
400
what conversion factor will we need in order to go convert from particles to moles?
avogadro's number
500
Which type of elements are shown below:
Metalloids
500
Explain why ionization energy decreases as you go down a group.
Elements down a group have more electron shells shielding, so the attraction between valance electrons and protons is a lot weaker.
500
What would the formula be for the following bond:
MgCl2
500
How many grams are in 3.35 moles of NaOH?
39.997 grams