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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
Give two examples for the following: Metals
Correct the following statement:
CO and Co both represents cobalt.
Give Two Examples for Each of the Following: Metalloids
Name: a Liquid Metal
How is sodium chloride different from its constituent elements, sodium and chlorine in its properties? Justify.
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
Complete the statement with the correct words.
Acid’s are chemicals which are _____ in taste and derived from plants and ________.
Match the statements in List I – 1 to 10 correct answers in List II-A to J.
| List I | LIst II | ||
| 1 | Fluorine and chlorine | A | Nitrogen |
| 2 | A diatomic molecule | B | Boron |
| 3 | A molecule containing the elements hydrogen and oxygen. | C | Reactants |
| 4 | A metalloid - showing properties of both metals and non-metals. | D | Chemical Formula |
| 5 | The term used for the substances which take part in the chemical reaction | E | Halogens |
| 6 | The term represents a substance by means of symbols. | F | Water |
| 7 | The term used for the substances formed as a result of a chemical reaction | G | Nitric Acid |
| 8 | A compound containing one atom of zinc and two atoms of chlorine. | H | Products |
| 9 | The chemical name for nitrogen monoxide. | I | Phosphorus |
| 10 | A polyatomic molecule. | J | Zinc Chloride |
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
Give the chemical formula for cane sugar.
