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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.
Mercury
write symbol with the variable valency
उत्तर
Mercury exhibits valency 1 and 2
| \[\ce{Hg^{1+}}\] | \[\ce{Hg^{2+}}\] |
| Mercurous | Mercuric |
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संबंधित प्रश्न
The scientist who proposed the first letter (or first letter and another letter) of the Latin or English name of
an element as its symbol, was :
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 the type of element for the following:
Lead
State the type of element for the following:
Radon
State what is meant by the term ‘activity series of metals’.
Define the term ‘valency’.
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Tin
write symbol with the variable valency
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Sulphite
What does the symbol '(aq.)' present in a chemical equation, mean?
Symbol of mercury is
