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प्रश्न
Fill in the blank:
Symbolic expression for a molecule is called _____.
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उत्तर
Symbolic expression for a molecule is called molecular formula.
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संबंधित प्रश्न
Write true or false
Milk is an emulsion.
Why is the symbol S for sulphur, but Na for sodium and Si for silicon?
Explain the terms 'valency' and 'variable valency'.
Fill in the blank:
Symbol represents _____ atom(s) of an element.
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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Platinum
State the type of element for the following:
Neon
Describe the different ways in which we can write the symbols of elements. Give appropriate examples.
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
In the same way in chemistry, each element is denoted by a ______.
