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प्रश्न
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 |
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उत्तर
| Noble gases | Symbols |
| (a) Helium | He |
| (b) Neon | Ne |
| (c) Argon | Ar |
| (d) Krypton | Kr |
| (e) Xenon | Xe |
| (f) Radon | Rn |
संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
The Latin language name of an element is natrium. The English name of this element is :
Give the symbol of the following element:
Lead
Give the symbol of the following element:
Radon
State the type of element for the following:
Oxygen
State the type of element for the following:
Aluminium
Write the chemical formula of the following:
aluminium chloride
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).
Dichromate
______ of some elements are derived from Latin or Greek names of the elements.
