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प्रश्न
What do the following symbol stand for?
H2
एका वाक्यात उत्तर
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उत्तर
H2 stands for one molecule of hydrogen.
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संबंधित प्रश्न
Give two symbols which have been derived from the "English names" of the elements.
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 a reason why elements are tabulated in a table called the ‘Periodic table’.
Give the symbol of the following element:
Sulphur [sulphide]
State the type of element for the following:
Carbon
State the type of element for the following:
Fluorine
State the type of element for the following:
Lead
Give the formula of the following gas:
Nitrous oxide
Define the term ‘valency’.
______ of some elements are derived from Latin or Greek names of the elements.
