Structure of the Atom
The Periodic Table
Valence Electrons and Electron Configurations
Short Answer Questions
Miscellaneous
100
Protons have a ________ charge
Positive
100
What we normally call "rows" we now call...
Periods
100
How many valence eletrons does this atom have?
1
100
List the protons, neutrons, and electrons for 2412Mg+2
Protons=12
Neutrons=12
Electrons=10
100
What is the atomic number of carbon?
6
200
If an atom loses 1 electron, what would the overall charge of the ion be?
+1
200
What family does chlorine belong to?
The Halogens
200
How many valence electrons does sulfur have?
6
200
Using 2412Mg+2 as an example, write the element that has 4 protons, 5 neutrons, and 2 electrons
94Be+2
200
What is the mass number for the following atom? 3215P-3
32
300
Electrons are located outside of the nucleus in what we call the...
Electron Cloud
300
What type of ion would you expect to have a low electronegativity?
Cation
300
What is the complete electron configuration of Fluorine (F)?
1s2 2s2 2p5
300
Lithium has 2 naturally occuring isotopes. Li-6 (6.017, 7.30%) and Li-7 (7.018, 92.70%). Calculate the average atomic mass with correct units. Round your answer to 4 significant figures.
6.945 amu
300
What is the abbreviated electron configuration for sodium?
[Ne] 3s1
400
How can we find the mass number using subatomic particles?
Add the protons and neutrons
400
What is the element with the largest electronegativity?
Fluorine (F)
400
How many valence electrons does an element with the following electron configuration have? [Kr] 5s2 4d8
2
400
Fictitious element D has an average atomic mass of 11.232 amu. Determine the unknown mass of isotope #3. Round your answer to 3 significant figures.
Isotope #1: 9.441 amu, 11%
Isotope #2: 9.886 amu, 14%
Isotope #3: ? amu, 75%
11.7 amu
400
How many protons, neutrons, and electrons does the following atom have? 5525Mn+3
Protons = 25
Neutrons = 30
Electrons = 22
500
Carbon-12 and Carbon-13 are examples of what?
Isotopes
500
Using atomic radius and subatomic particle attraction, explain why selenium has a smaller ionization energy than oxygen.
Selenium has a larger atomic radius due to having more shells, therefore the attraction between the protons and electrons is weaker, which means it would be easier to remove the electron and therefore require less energy.
500
What is the abbreviated electron configuration of Silicon (Si)?
[Ne] 3s2 3p2
500
The fictional element Yz has two isotopes. Yz-52 which has a mass of 51.9 amu and Yz-53 which has a mass of 53.2 amu. The average atomic mass of Yz is measured to be 52.32 amu. Calculate the percent abundance of each isotope. Round your FINAL PERCENTAGES to the nearest whole numbers.
Yz-52 = 68%
Yz-53 = 32%
500
Most of the mass of an atom is made up of what subatomic particles?
Protons and neutrons