Answer:
45 neutrons
Explanation:
Bromine has 35 protons and a mass number of 80. a) How many neutrons does the atom of bromine have? The mass number = protons + neutrons. Bromine has a mass number of 80 and 35 protons so 80-35 = 45 neutrons.
I think the number of protons in the nucleus the number of valence electrons atomic mass...
Qualitative observation. Which is data or information with your senses such as sight, taste, smell, and touch.
It creates oxygen which every living thing needs to live. i hope this helps! :)
