The outermost energy shell of an atom
because they are involved in forming bonds
Answer: Fluorine
Explanation: It belongs in the same group as Bromine
Answer:
1) chemical indicators won't work above it's pH range so therefore it probably won't change colour.
2) the solution should be clear and colourless to see colour change.
3) indicators tend to be of low accuracy so it's not 100% reliable.
Answer:
Number of neutrons is equal to 148.
Answer:
atom is the answer I think
