Structure of the Atom
The Periodic Table
Valence Electrons and Electron Configurations
Short Answer Questions
Miscellaneous
100
Protons are 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
How many sig figs does 0.002300 have?
4
200
If an atom loses 1 electron, what would the overall charge of the ion be?
+1
200
What is the atomic number of carbon?
6
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
When adding two or more numbers, how should you round your answer?
When adding OR subtracting, you should round your answer to the least amount of deciaml places (past the decimal poing) between the numbers that you are adding/subtracting
300
Electrons are located outside of the nucleus in what we call the...
Electron Cloud
300
What element has the smallest atomic radius on the periodic table?
Helium (He)
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 5 significant figures.
Isotope #1: 9.441 amu, 11%
Isotope #2: 9.886 amu, 14%
Isotope #3: ? amu, 75%
11.746 amu
400
List the following from largest to smallest atomic radius. S, Fr, Mn, Ar
Fr > Mn > S > Ar
500
Carbon-12 and Carbon-13 are examples of what?
Isotopes
500
Put these elements in order of increasing ionization energy. S, Tc, Cu, Cs
Cs < Tc < Cu < S
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
Convert 5.20 kg to ounces (28.35 g = 1 oz) Round your answer to have the same number of significant figures as 5.20
183.421517 --> 183 oz