Periodic Table
Anions & Cations
Isotopes
Average Atomic Mass
Miscellaneous
100
What group is column 8?
Noble Gases
100
Cations are ___________ charged ions.
Positively
100
Isotopes have the same ____ but different ___.
atomic number (number of protons), mass number (number of protons + neutrons)
100
What is atomic mass?
The atomic mass for each element appearing on the periodic table represents the weighted average of masses for each individual isotope of an element
100
What the difference between an element, ion and isotope?
Element- different number of protons
Ion- different number of electrons
Isotope- different number of neutrons
200
What is the oxidation charge of group 5A?
-3
200
Elements in group 2A for ions with this charge.
2+
200
Complete the following:
Isotope name: Oxygen-17
atomic#___ mass#____ #of protons ____ #of neutrons_____ #of electrons_____
Atomic #: 8
Mass #: 17
# of Protons: 8
# of Neutrons: 9
# of Electrons: 8
200
An element with 5 protons, 6 neutrons, and 8 electrons has a mass number of ___.
11
200
Which about isotopes is true?
a. they have the same number of neutrons
b. they have a different atomic number
c. they have the same number of protons
C. They have the same number of protons
300
What are the 3 parts of an atom?
Protons, electrons, and neutrons
300
Anions are formed by (metal or nonmetal)
Nonmetal
300
Arsenic isotope is written as As-85 with 33 protons, how many neutrons does it have?
52 neutrons
300
The mass of the most common isotope of an element is known based on an element's ____.
Average atomic mass.
300
How do you calculate the average atomic mass of an isotope?
Multiply the mass of each isotope by its percent abundance then divide by 100
400
A.) This element is in the same family as Br, but has fewer protons than Mg. It must be ____.
B.) This element has 6 energy levels and 8 valence electrons. It must be ____.
A.) F (Fluorine)
B.) Rn (Radon)
400
Cations are __________ om size than the atoms from which they are formed.
smaller
400
Why are these two atoms not isotopes?
They have different atomic numbers.
400
If Boron-10 with an abundance of 19.78% 10.013 amu and Boron-11 with an abundance of 80.22% 11.009 what is the average atomic mass?
10.81 amu
400
How many elements have been discovered?
118
500
A.) This element is in the alkaline earth metals group and has 3 energy levels. This must be____.
B.) This element is in the family with the most reactive non metals and has 4 energy levels. It must be____.
A.) Mg (Magnesium)
B.) Br (Boron)
500
Explain the difference between a cation and an anion and how can you determine the change of an ion based on its position on the periodic table?
A cation is a positive and anion is negative. Metals tend to form cations and non metals form anions.
500
Solve the following:
Uranium-238
Atomic #: 92
Mass #: 238
# of Protons: 92
# of Neutrons: 146
# of Electrons: 92
500
If Sulfer-32 93.12% 31.928 amu and Sulfer-34 6.88% 34.023 what will the average atomic mass?
32.07 amu
500
What is the number of protons, neutrons and electrons in Tin-120?
Protons=50
Neutrons=70
Electrons=50