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प्रश्न
Write the molecular formulae of all the compounds that can be formed by the combination of the following ions
Cu2+, Na+, Fe3+, C1– , `"SO"_4^-2`, `"PO"_4^3-`
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उत्तर
C1– , `"SO"_4^-2`, `"PO"_4^3-` anions
CuCl2, CuSO4, Cu3(PO4)2
NaCl, Na2SO4, Na3PO4
FeCl3Fe2(SO4)3, FePO4
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संबंधित प्रश्न
Work out the formula for sulphur dioxide. (Valencies : S = 4 ; O = 2)
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| 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 |
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