Atomic Theory
What is the element symbol for an element with an atomic number of 27, Mass number of 59, and 24 electrons?
59 +3
Co
27
Number of protons
What is the wavelength and frequency formula?
c = (lambda) * v
E = h * v
Write the full electron configuration for Ti
1s2 2s2 2p6 3s2 3p6 4s2 3d2
How many neutrons are in an atom with an atomic number of 45 and an mass number of 94?
49 Neutrons
What is an Isotope?
An element with the same number of protons but different number of neutrons
Violet has a wavelength of 4.10x10^-12 m. What is the frequency?
7.32x10^19 Hz
Write the orbital notation for As
1s 2s 2p 3s 3p 4s 3d 4p (end with three electrons)
How many electrons are in the K+ ion?
18 Electrons
What is an Ion?
An element with a positive or negative charge
Label the parts of a wave - look at photo for answer (https://accessdl.state.al.us/AventaCourses/access_courses/physical_science_cr/physical_science_v09/unit3/03-02_review.htm)
A: Trough
B: Amplitude
C: Crest
D: Wavelength
Write the electron configuration for Sn^4+ and tell me what element it’s isoelectronic with
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6
Krypton
How many electrons are in the O2- ion?
10 electrons
What is a Cation
an Ion with a positive charge that loses electrons
Label the parts of the electromagnetic spectrum - (https://www.mayfieldschools.org/Downloads/Electromagnetic%20Spectrum%20Worksheet_Blank.pdf)
Radio, microwave, infrared, visible light, ultraviolet, X-Rays, Gamma Rays
Write the noble gas abbreviation for I
[Kr] 5s2 4d10 5p5
An element has 2 common isotopes. The first isotope has a mass of 68.926 amu and occurs 60.10% of the time. The second isotope has a mass of 70.925 amu and occurs 39.90 % of the time. Calculate the atomic mass of this element.
69.73 amu
What is an anion?
An ion with a negative charge that gains electrons
Calculate the frequency and wavelength of waves with an energy of 3.45 x 10^-21 J.
5.21x10^12 Hz
5.76x10^-5 m
What element has the quantum numbers (3,1,0,-1/2)
Chlorine