Answer:
hello, i hope this helps.
Explanation:
1 - group
2 - period
3 - periodic table
4 - family
5 - octet rule
6 - valence electrons
The answer is zero!
let me know if you need help with anything else! :)
H2(g) + Cl2(g) = 2 HCl(aq) (balanced equation)
1, 1, 2 (coefficients)
