Answer:
if its under 7 then it's an acid you neek over 7 is alkaline
Answer:
36 protons
Explanation:
Because atomic number Z is equal number of protons while mass number is protons plus neutrons
halogens
Group 7A (or VIIA) of the periodic table are the halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
