Fourth row is looking for the electrons of each atom. Recall that the number of electrons is equal to the number of protons for neutral atoms
# of electrons = # protons for neutral atoms
For the fourth row, we must determine each # of protons of each atom.
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 fourth row of the table for the number of electrons.
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