chem valencies Flashcards
1
Q
oxygen
A
-2
2
Q
pottasium
A
k+
3
Q
sodium
A
Na+
4
Q
copper
A
cu 1 or 2 +
5
Q
silver
A
Ag+
6
Q
chloride,bromide,iodide
A
Cl- Br- I-
7
Q
hydroxide
A
OH-
8
Q
HCO3 hydrogen carbonate/bicarbonate
A
hco3-
9
Q
NH4 ammonium
A
+
10
Q
Hydrogen
A
+
11
Q
nitrite
A
-2
12
Q
calcium
A
ca+2
13
Q
Mg
A
+2
14
Q
Zn
A
+2
15
Q
iron (ferrous) = +2fe
A
ferric fe+3
16
Q
Pb+2, Nickle Ni +2
A
MERCURY Hg+2
17
Q
Tin Sn+2
A
Carbonate= CO3 -2
18
Q
SULPHITE SO3 -2
A
SULPHATE SO4 -2
19
Q
SULFIDE -2
A
OXIDE -2
20
Q
Al 3
A
Nitride -3(N) Phosphate -3 (Po4)
21
Q
chromium
A
Cr+3
22
Q
Barium
A
2
23
Q
nitrate
A
-1
24
Q
nitrate nitrite nitride
A
-1 -2 -3
