CBSE Class 9 Answered
Can I get valency table for writing chemical formula
Asked by Muruga | 23 Jan, 2018, 06:52: AM
Expert Answer
Representation of some positive radicals and their valency
|
Name of Radical |
Representation |
Valency |
|
Hydrogen |
H+ |
1 |
|
Sodium |
Na+ |
1 |
|
Potassium |
K+ |
1 |
|
Silver |
Ag+ |
1 |
|
Ammonium |
NH4+ |
2 |
|
Magnesium |
Mg2+ |
2 |
|
Calcium |
Ca2+ |
2 |
|
Iron(II) |
Fe2+ |
2 |
|
Gold |
Au2+ |
2 |
|
Copper(II) |
Cu2+ |
2 |
|
Iron(III) |
Fe3+ |
3 |
|
Aluminium |
Al3+ |
3 |
|
5Platinum(IV) |
Pt4+ |
4 |
Representation of some negative radicals and their valency
|
Name of Radical |
Representation |
Valency |
|
Chloride |
Cl− |
1 |
|
Bromide |
Br− |
1 |
|
Hydroxide |
OH− |
1 |
|
Acetate |
CH3COO− |
1 |
|
Nitrate |
NO3− |
1 |
|
Nitrite |
NO2− |
1 |
|
Bisulphate |
HSO4− |
1 |
|
Bisulphite |
HSO3− |
1 |
|
Bicarbonate |
HCO3− |
1 |
|
Oxide |
O2− |
2 |
|
Carbonate |
CO32− |
2 |
|
Sulphate |
SO42− |
2 |
|
Sulphite |
SO32− |
2 |
|
Dichromate |
Cr2O72− |
2 |
|
Nitrite |
N3− |
3 |
|
Phosphate |
PO43− |
3 |
Step-by-step method for writing a chemical formula:
Answered by Varsha | 23 Jan, 2018, 09:54: AM
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