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प्रश्न
‘An atom is the basic unit of an element’. Draw a diagram of an atom – divisible as seen today.
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उत्तर
‘An atom is the basic unit of an element’.
An atom of fluorine [At. No. 9]
\[\ce{\underset{\text{[atomic no.]}}{Z} = \underset{\text{[no. of protons]}}{P} = \underset{\text{[no. of electrons]}}{e}}\]
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संबंधित प्रश्न
Define: Formula
Find the atomicity of the Following molecule:
Dinitrogen Oxide
Fill in the blank
A diatomic gaseous element is _______.
Classify substances into pure and impure substances in the form of a chart or tabulation.
Give the name of the radical - CO3
Write the names of elements from the following symbol:
Cd
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
Give an example of two liquids which form homogenous.
Match the separation of components in List I with the most appropriate process in List II.
| List I | List II |
| 1. Naphthalene from naphthalene & sodium chloride. | A: Separating funnel |
| 2. Cream from milk. | B: Sublimation |
| 3. Kerosene oil from kerosene oil & water. | C: Boiling |
| 4. Lead nitrate from an aqueous solution of lead nitrate. | D: Centrifugation |
| 5. Ammonia from an aqueous solution of ammonia. | E: Distillation |
Differentiate between elements and compounds.
