Number of proton K=19
so, 42 - 19 =23
then the answer in 19 protons and 23 neutrons
Elements of iodine are fluorine, chlorine, bromine, and astatine.
I would answer B!! But your guess is as good as mine!!
This is the same as its freezing point
hope this helps
D will be the answer I hope that help good luck I hope. My answer help you