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प्रश्न
The symbol of a metal element which is used in making thermometers is :
पर्याय
Ag
Hg
Mg
Sg
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उत्तर
Hg
The symbol of the metal used in making thermometers is Hg (Mercury).
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संबंधित प्रश्न
Write true or false
Milk is an emulsion.
Which particular atom of the above element is used for this purpose ?
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Phosphate
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 |
Match the noble gases – with their correct symbols:
| Noble gases | Symbols |
| (a) Helium | (1) Ar |
| (b) Neon | (2) Xe |
| (c) Argon | (3) Rn |
| (d) Krypton | (4) He |
| (e) Xenon | (5) Kr |
| (f) Radon | (6) Ne |
Write the radical of the following valency:
Oxygen
Write the radical of the following valency:
Iodine
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).
Bisulphate
Symbol of mercury is
Write a note on Greem symbols.
