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How many valence electrons does this have?
2
What element is this?
Magnesium
What is the overall electrical charge of the nucleus in this atom?
+8
What element is this an atom of?
Oxygen
What element is this an atom of?
Lithium
What are the total number of protons, neutrons, and electrons in carbon (C)?
18
If an atom has 17 protons, 18 neutrons, and 17 electrons, what is the mass of this atom?
35
If you want to know how many protons+neutrons an element has, you would look at what on the reference sheet?
Atomic Mass
If you need to solve for how many neutrons, what do you do?
Mass-Atomic Number
If you know the atomic number, what other two things do you know?
number or protons and number of electrons
How many protons, neutrons, and electrons are found in Halfnium (Hf) with a mass of 178? (do not total, list each one out)
72 protons, 106 neutrons, 72 electrons
The smallest particle of an element is called
Atom
An element has 36 protons, 36 electrons, and a mass of 84. How many neutrons does it have?
48
What's the difference in the number of electrons in Selenium (Se) and Aluminum (Al)?
21
Neutron's Mass
1 AMU
Neutron's Location
Nucleus
Neutron's Charge
neutral
Electron's Charge
negative
Electron's Location
Electron Cloud
Electron's mass
< 1 AMU
Proton's mass
1 AMU
Proton's Location
Nucleus
Proton's charge
positive