Chemistry
Give examples of eight metals which show variable valency. State the valency of sulphur in :
(a) SO2
(b) SO3
Related Questions
Explain the meaning of the term 'valency'. State why the valency of the metal potassium is +1 and of the non-metal chlorine is -1.
What is meant by the term 'variable valency'. Give a reason why silver exhibits a valency of +1 and +2.
State the valency in each case and name the following elements or radicals given below :
- K
- Cr2O7
- Cl
- Ni
- ClO3
- CO3
- Ba
- HCO3
- NO2
- Na
- Br
- Zn
- Mg
- O
- Co
- CrO4
- ClO
- MnO4
- Li
- I
- OH
- O2
- ZnO2
- SiO3
- NO3
- SO3
- SO4
- PO4
- N
- C
- PO3
- Al
- Ca
- H
- PbO2
- HSO3
- AlO2
- Cr
- HSO4
- NH4
State the variable valencies of the following elements and give their names. (a) Cu, (b) Ag, (c) Hg, (d) Fe, (e) Pb, (f) Sn, (g) Mn, (h) Pt, (i) Au