Question

pls answer this fast....pls pls

Answer 1

Ok...
So number of protons equal atomic number
So number of protons is 35

And mass number equal protons + neutrons
80 = 35 + neutrons
neutrons = 45

Br- means it has one extra electron..
electron = 35 + 1 = 36

So the correct answer is option (4)

Hope it helps

Thanks

Answer 2

Hey buddy

Here 4th option is correct