+1 |
H |
?2 |
O |
+1 |
K |
?2 |
O |
+6 |
S |
?2 |
O |
若三種元素組成化合物,則有
+1 |
K |
?2 |
O |
+1 |
H |
+1 |
H |
+6 |
S |
?2 |
O |
+1 |
K |
+6 |
S |
?2 |
O |
若四種元素組成化合物,則則有
+1 |
K |
+1 |
H |
+6 |
S |
?2 |
O |
即按指定化合價(jià)最多可形成化合物的種數(shù)為7種.
故選C.
+1 |
H |
?2 |
O |
+1 |
K |
?2 |
O |
+6 |
S |
?2 |
O |
+1 |
K |
?2 |
O |
+1 |
H |
+1 |
H |
+6 |
S |
?2 |
O |
+1 |
K |
+6 |
S |
?2 |
O |
+1 |
K |
+1 |
H |
+6 |
S |
?2 |
O |