We’re being asked to determine the number of electrons, protons, and neutrons in the ion 9Be+
An element can be represented as:
You can determine the identity of the element using its atomic number:
Atomic number (Z):
• represents the identity of the element
• reveals the number of protons
• in a neutral element:
# of protons = # of electrons
Mass number (A)
• reveals the number of protons and neutrons
mass number = # of protons + # of neutrons
How many electrons are in the ion 9Be+?
How many protons are in the ion 9Be+?
How many neutrons are in the ion 9Be+?
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