Which Two elements on the periodic table have similar characteristics?

A. neon and fluorine
B. chlorine and sulfur
C. fluorine and chlorine
D. oxygen and chlorine
E. argon and fluorine

Ok so co(g) is not pronoused that. the only clue is that youpronouse it the oppisote way. 

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o

We can't until we know what we are working with or on

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -