Answer:
Halife of C-14 is=14(RAM÷2)
You get=7 but further more let's say after 3 half life as your question stated it may result to decimal something which is impossible (as nucleons never be decimal)
Hence after 3half life it will continue to be 7
Without a charge, it would be 35 electrons. Protons have a positive charge and electrons negative. They must balance each other out, otherwise the atom will be charged.
D identical diploid daughter cells