Chemistry
Match the names of ions and radicals from 1 to 10 with their correct answer from A to Q.
| A: | Hg2+ | B: | MnO41- | C: | Sn4+ |
| D: | Pb2+ | E: | Sn2+ | F: | Pb4+ |
| G: | SO32- | H: | N3- | I: | NO21- |
| J: | MnO42- | K: | Hg1+ | L: | SO42- |
| M: | ClO1- | N: | ZnO22- | O: | Cr2O72- |
| P: | CrO42- | Q: | ClO31- |
| 1. | Hypochlorite | 2. | Permanganate |
| 3. | Plumbous | 4. | Zincate |
| 5. | Nitride | 6. | Mercuric |
| 7. | Stannic | 8. | Nitrite |
| 9. | Sulphite | 10. | Dichromate |
Related Questions
Calculate relative molecular mass of
(a) ZnCO3
(b) CaSO4[Zn = 65, S = 32, O = 16, Ca = 40, C = 12]
Calculate the percentage composition of
(a) calcium chloride
(b) calcium nitrate[Ca = 40 , Cl = 35.5 , N = 14 , O = 16]
State which of the following formulas of compounds A to J are incorrect. If incorrect write the correct formula.
A: (NH4)3SO4 B: NaZnO2 C: KCr2O7 D: NaCO3 E: Ca2(PO4)3 F: Mg(SO4)2 G: KNO3 H: NaClO I: NaO J: BaCl2 Fill in the blanks with the correct word from the words in brackets :
- A symbol represents a short form of a/an …………… [atom/element/molecule]
- Compounds are always …………… [heterogeneous/homogeneous] in nature.
- Variable valency is exhibited, since electrons are lost from an element from the …………… [valence/penultimate] shell.
- A chemical equation is a shorthand form for a …………… [physical/chemical] change.
- Relative molecular mass of an element/compound is the number of times one …………… of the substance is heavier than -1⁄12th the mass of an atom of carbon [C12]. [atom/ion/molecule]