We have to identify the given element: 83209X.
Recall that the symbol of an element is written is this way:
Atomic number (Z):
• represents the identity of the element
• reveals the number of protons
• in a neutral element:
number of protons = number of electrons
Mass number (A)
• reveals the number of protons and neutrons
mass number = number of protons + number of neutrons
Identify the following elements.
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