Proton Count
Neutrons
Atomic Mass
Electrons
Isotopes
100
The amount of protons in Germanium
What is 32 Protons
100
Protons + Neutrons = ____________
Protons + Neutrons = the mass number of an atom
100
The atomic mass of Thorium
What is 232.04 G
100
How many electrons does Sulfur-34 have?
16
100
How Do you solve for average atomic mass?
1. Move the decimal over two spots to the left for perfent abundance.
2. Multiply the decimal by the mass of atom (amu)
3. Add the numbers you get from each set.
200
The number of Protons in a Copper-65 atom
What is 29 protons?
200
How many neutrons does Magnesium-26 have?
14
200
Calculate the average atomic mass of Chlorine
What is 35.45 amu?
200
Number of electrons=
Number of protons
200
Calcium-43 has how many neutrons?
What is 23?
Number next to element name is the mass #
To figure out the number of neutrons, subtract the number of protons from the mass number.
300
Atomic number=
Number of protons
300
How many neutrons does Carbon-13 have?
7
300
The average atomic mass of gold with the 50% being gold-197 and 50% being gold-198.
What is 197.5 amu?
300
The number of electrons in a Polonium atom?
84 electrons
300
How many neutrons are in a K-39 isotope? (Hint- it's in your green notebook)
20 neutrons
400
How many protons are in a Cu-63 isotope?
29
400
How do you find the number of neutrons?
Subtract the atomic number (number of protons) from the mass number (total number of protons and neutrons)
400
Calculate the average atomic mass of iridium using the following data for two iridium isotopes. Isotope mass (u) relative abundance
Ir-191 191.0 37.58%
Ir-193 193.0 62.42%
What is 192.25 amu?
400
How do you find the number of electrons
Start with the atomic number of the element, which tells you the number of protons. The number of electrons equals the atomic number.
400
The correct name for an atom with 15 protons 15 electrons and 20 neutrons
What is Phosphorus-35?
500
Bonus: What does 14 stand for in the isotope carbon-14?
Mass number
500
BONUS: Who is known as the father of the periodic table?
Dmitry Mendeleev
500
The average atomic mass is
Calculate the average atomic mass of magnesium using the following data for three magnesium isotopes. Isotope mass (u) relative abundance
Atomic Mass Relative Abundance
Mg-24 23.9850 78.99
Mg-25 24.9858 10.00
Mg-26 25.9826 11.01
What is 24.31 amu?
500
The number of electrons in a Silver-109 atom
What is 47 electrons?
500
A magnesium atom has 12 protons and 15 neutrons, what is its isotope name?
Magnesium-27