Advertisements
Advertisements
प्रश्न
Write the formula of the following compound:
Potassium dichromate
Advertisements
उत्तर
Potassium dichromate - K2Cr2O7 - `"K"^1["Cr"_2"O"_7]^(2-)`
APPEARS IN
संबंधित प्रश्न
State the chemical symbols for the following elements :
Sodium, Potassium, Iron, Copper, Mercury, Silver.
What do the symbols, H2, S and O4 mean in the formula H2SO4 ?
The atomicities of ozone, sulphur, phosphorus and argon are respectively :
An element Y has a valency of 4. Write the formula for its :
- chloride
- oxide
- sulphate
- carbonate
- nitrate
Define ‘formula unit’ of an ionic compound. What is the formula unit of (i) sodium chloride, and
(ii) magnesium chloride ?
The formula of carbonate of a metal M is M2CO3.
What will be the formula of its iodide ?
Match the following:
| Column A | Column B |
| (a) Pb(NO3)2 | (i) rotten eggs smell |
| (b) CO2 | (ii) burns with a pop sound |
| (c) (NH4)2Cr2O7 | (iii) the suffocating smell of sulphur |
| (d) HCI | (iv) lime water turns milky |
| (e) NO2 | (v) crackling sound |
| (f) O2 | (vi) residue swells up |
| (g) H2 | (vii) brown gas |
| (i) H2S | (viii) supports combustion |
| (j) SO2 | (ix) fumes with NH3 solution |
Name the element in the compound and give the formula of the following compound:
Phosphoric acid
Write the formula of the following compound:
Sodium hydroxide
Write the formula of the following compound:
Zinc hydroxide
Write the formula of the following compound:
Copper [I] sulphide
Write the formula of the following compound:
Iron [II] hydroxide
Write the formula of the following compound:
Silver [I] chloride
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
(NH4)3SO4
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaZnO2
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaClO
Write the molecular formulae for the following compounds
Copper (II) bromide
What is a chemical formula?
