Basics
For the elements Ba, F and N what is the order on increasing electronegativity
Ba<N<F
Find the molar mass of AlCl3.
133.5 g/mol
T or F : Ernest Rutherford Proposed the Plum Pudding model of the atom.
If true leave as is
If false correct the statement
False.
Rutherford: gold foil experiment, atom has a positively charged nucleus.
"Plum Pudding model was J.J Thompson
What are the correct names for the following
CoCl3 and ICl3
Cobalt (III) Chloride
Iodine Trichloride
What is the shape of a molecule if they have 3 bonding pairs and 1 lone pair?
Trigonal Pyramidal
What is the name for group 18 elements?
Noble Gases
Ca2+ With 40 for atomic mass and an atomic number of 20. How many protons, neutrons and electrons?
Protons: 20
Electrons: 18
Neutrons: 20
Who discovered the photoelectric effect?
Albert einstein
An element has 21 electrons. What is its FULL electron configuration ?
Which of the following has the lowest first ionization Energy?
P, Ba, S, O
Ba
What is the Molecular Geometry of CH4?
Tetrahedral
What is the mass of a 7.508 mol sample of sodium hydroxide?
300.3 g
Balance the equation.
PCl5+H2O= POCl3+HCL
PCl5+H2O= POCl3+2HCL
Rank the following types of electromagnetic radiation from longest wavelength to shortest wavelength:
Visible, Ultraviolet, Microwave, Infrared, Xray
Microwave> Infrared> Visible> ultraviolet> xray
.What bonding angle does a tetrahedral have?
109.5
Which family of elements contains nonmetals, metalloids and metals?
a. Halogens (Grp 17)
b. Noble Gases (Grp 18)
c. Carbon Family (Grp 14)
d. Alkaline Earth Elements (Grp 2)
Carbon Family (Grp 14)
A magical wave has a wavelength of 0.63 nm. What is the frequency of this wave?
4.8x10^17
Which of the following molecules exhibit resonance?
BH3, NO2, SF6, O3, PCl5
NO2, O3
Which of these atoms can have an expanded octet?
a. C
b. H
c. S
d. F
S
Third row element
What does VSEPR stand for?
Valence Shell Electron Pair Repulsion
How many sulfuric acid molecules are contained in one mole of sulfuric acid?
DID I GET YOU LOL.
6.022x1023 molecules
0.2074 g of calcium hydroxide, Ca(OH)2 in 40.00 mL of solution? What is the molarity?
7.00x10-2 M
What are the formal charges on carbon and all oxygens (CO3)2-
O on the left and right: -1
O on top (with double bond): 0
Central C: 0
Balance the equation:
PH3 + O2 = P4010 + H2O
4PH3 + 8O2 = 1P4010 + 6H2O
What is a resonance structure?
a. A structure with double bonds
b. electrons that are delocalized in an atom
c. Electrons that are localized in atoms
d. Electrons that never move
A set of structures with double bonds shown in different ways meant to represent
electrons that are delocalized in an atom