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We are Valence Electrons found?
Electrons in the outermost shell of an atom.
Describe an Electron
Electrons are subatomic particles surrounding the nucleus with negative charge.
Most of Atom's Volume is Composed of?
Empty space
How do you determine the number of Protons?
Determined by the atomic number of an element.
How do you determine the number of Neutrons?
Calculated by subtracting protons from mass number.
Neutron vs Electron
Neutrons are neutral; electrons are negatively charged.
True or False: Electrons are much lighter than protons.
True
What is an Isotope?
Isotopes have the same number of protons but different number of neutron.
How do you find the Atomic Mass?
Mass number is protons plus neutrons combined.
What are some Proton Characteristics?
Protons are positively charged and determine element identity.
An atom Sulfur has 16 protons and 16 neutrons. What is the Atomic Mass of Sulfur?
Approximately 32 due to 16 protons and neutrons.
What is the Nucleus composed of?
All atomic nuclei contain protons and neutrons.
What are the majority of elements in the Periodic Table classified as?
Most elements are classified as metals.
The verticle columns of the Periodic Table are called?
Periods
What is the Symbol for Silver?
Ag is the symbol for silver.
How many electrons are allowed on the first ring of the electron cloud?
Maximum of 2 electrons allowed in this level.
