A:special anything
B:special something
C:anything special
D:nothing special
Spring comes. good season it is!Let's take a walk.
①G→Q+NaCl ②Q+H2O→X+H2 ③Y+NaOH→G+Q+H2O ④Z+NaOH→Q+X+H2O
则G,Q,X,Y,Z这五种化合物中氯元素的化合价由低到高的顺序为( )
结合水和溶液的相关知识,回答下列问题: