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प्रश्न
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Iron
write symbol with the variable valency
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उत्तर
Iron has variable valency 2 and 3
| \[\ce{Fe^{2+}}\] | \[\ce{Fe^{3+}}\] |
| Ferrous | Ferric |
OR
| \[\ce{Fe[II]}\] | \[\ce{Fe[III]}\] |
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संबंधित प्रश्न
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
The atomic number of an element X is 13. What will be the number of electrons in its ion X3+ ?
What do the following symbol stand for?
H2
Match the non-metallic elements – with their correct symbols. Non-metallic elements are:
| Non-Metallic elements | Symbol |
| (a) Carbon | (1) O |
| (b) Chlorine | (2) I |
| (c) Oxygen | (3) Si |
| (d) Phosphorus | (4) C |
| (e) Hydrogen | (5) Cl |
| (f) Nitrogen | (6) P |
| (g) Iodine | (7) F |
| (h) Bromine | (8) H |
| (i) Fluorine | (9) S |
| (j) Silicon | (10) Br |
| (k) Sulphur | (11) N |
State which element exists in the highest percentage in earth’s crust.
Give the symbol of the following element:
Chlorine [chloride]
State the type of element for the following:
Zinc
Write the radical of the following valency:
Nitrate
State the valency of the following metallic element and write symbol with the valency
Zinc
Give the qualitative and quantitative meaning of the term ‘symbol’.
