holy MOLEy!
What is a mole?
The SI base unit for measurement of amount of a substance
What group on the periodic table contains bismuth?
Group 15
Which would lose more energy: an electron falling from n=2 to n=1 or an electron falling from n=5 to n=2?
n=5 to n=2
What is the the trend for atomic radius moving left to right across a period?
atomic radius decreases
What is a cation?
A positively charged ion (more protons than electrons)
What is Avogadro's number?
6.02 x 1023 representative particles
What is the correct atomic symbol for writing bromine-80?
8035Br
Convert 5.63 x 10-6 m into nm.
5630 nm
What is the most electronegative element?
Fluorine
Which of the following will become an anion:aluminum or fluorine?
fluorine
What is the three types of representative particles?
atoms (element), molecules (covalently bonded), formula units (ionically bonded)
What element's atom has a mass number of 150 and contains 88 neutrons?
Samarium
Calculate the wavelength (in nanometers) if a photon has a frequency of 6.6179 x 1014 1/s.
453 nm
Which of the following has a higher ionization energy: S or Te?
Sulfur
Write the formula for the ionic compound formed from the bonding of barium and chlorine?
BaCl2
Convert 5 moles of H2O into molecules.
3.01 x 1024 molecules of H2O
What type of decay occurs when a proton decays into a neutron?
Calculate the energy of a wave with frequency 3.997 x 1014 Hz.
2.65 x 10-19 J
Put the following in order of increasing electronegativity: Rb, S, Al.
Rb-->Al-->S
Write the formula for molybdenum (VI) chlorate.
Mo(ClO3)6
Convert 1.0836 x 1025 formula units of NaCl into moles.
18 moles of NaCl
Write the full decay reaction for iodine-131 decaying into xenon.
13153I--> 13154Xe +0-1e
What is the energy of a photon that is emitted when an electron falls from n=4 to n=2?
4.0865x10-19 J
Which has a higher SECOND ionization energy: Na or Mg?
Na
Write the name for the ionic compound Ru2(SiO4)3.
Ruthenium (VI) silicate