Chemistry
State which of the following elements or radicals are divalent –
(a) Lithium, (b) Nickel, (c) Ammonium, (d) Bromide, (e) Sulphite, (f) Nitride, (g) Carbide, (h) Chromium, (i) Bisulphite, (j) Dichromate, (k) Permanganate.
Related Questions
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
Explain the meaning of the term 'compound' with a suitable example. State the main characteristics of a compound with special reference to the compound iron [II] sulphide.
Name the elements in the compound and give the formula – of the following compounds :
(a) Nitric acid, (b) Carbonic acid, (c) Phosphoric acid, (d) Acetic acid, (e) Blue vitriol, (f) Green vitriol, (g) Glauber's salt, (h) Ethane, (i) Ethanol