Advertisements
Advertisements
प्रश्न
Give the formula of the following gas:
Hydrogen chloride
Advertisements
उत्तर
Hydrogen chloride – HCI
APPEARS IN
संबंधित प्रश्न
Name the element used as a standard for atomic mass scale.
The symbol of a metal element which is used in making thermometers is :
An element which can exhibit valencies of 2, 4 and 6 can be :
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
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 |
Give the symbol and the number of atoms of the following elements present in water.
Write the chemical formula of the following:
calcium sulphide
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).
Iodide
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).
Aluminate
The name copper was taken from ______.
