An element can be represented as:
identity of the element → Atomic number (Z):
neutral element: # of protons = # of electrons
Mass number (A)
mass number = # of protons + # of neutrons
Fill in the gaps in the following table:
Symbol | P3- | |||
Protons | 35 | 49 | ||
Neutrons | 45 | 66 | 118 | |
Electrons | 46 | 76 | ||
Mass number | 31 | |||
Net charge | 1- | 3+ |
Complete the second row of the table for the number of protons.
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