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
Symbol | 112Cd | ||||
Protons | 38 | 92 | |||
Neutrons | 58 | 49 | |||
Electrons | 38 | 36 | |||
Mass no. | 81 | 235 |
Complete the second row of the table.
Protons | 38 | 92 |
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