+1 |
H |
-2 |
O |
-2 |
S |
+1 |
K |
A.4种 | B.5种 | C.6种 | D.7种 |
+1 |
H |
-2 |
O |
-2 |
S |
+1 |
K |
A.-1 | B.+1 | C.+3 | D.+5 |
A.+3,+4 | B.+5,+3 | C.+6,+3 | D.+3,+6 |
A.在Mg3N2中氮元素化合价为-6价 |
B.NH4NO3中氮元素化合价代数和为零 |
C.在氮气中氮元素化合价为零 |
D.在N2O4和NO2中氮元素的化合价是不同的 |
A.KCl | B.ClO2 | C.NaClO4 | D.KClO3 |
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