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Name a non-metal which is tetratomic....

Name a non-metal which is tetratomic.

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The non-metal is phosphorus. It exists as P molecule and is tetratomic.
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(a). Define non-metals. Give five examples of non-metals. (b). Name a non-metal which conducts electricity. (c). Name a non-metal haivng lustre (shining surface). (d). Name a non-metal which is extremely hard. (e). How do non-metlas react with oxygen? Explain with an example. Give equation of the reaction involved. What is the nature of the product formed ? How will you demonstrate it?

Name a non-metal which is lustrous and a metal which is non-lustrous.

Name the non-metal which is lustrous.

Generally non-metals are non-lustrous. Name one non-metal which is lustrous.

Name a non-metal which is a good conductor of electricity.

Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non malleable and are coloured. (a) Name a lustrous non-metal. (b) Name a non-metal which exists as a liquid at room temperature. (c) The allotrpic form of a non-metal is a good conductor of electricity . (d) Name a non-metal which is known to form the largest number of compounds. (e) Name a non-metal other than carbon which shows allotropy. (f) Name a non-metal which is required for combustion.

Name the non-metals which show the following properties : (i) A non-metal which has lustre and is a good conductor of electricity. (ii) A non-metal which is the hardest natural substance. (iii) A non-metal which is essential for respiration (iv) A non-metal which is the source of energy in the sun and stars.

DINESH PUBLICATION-ATOMS AND MOLECULES-VERY SHORT ANSWER QUESTIONS
  1. Sample A contains one gram molecules of oxygen molecules and sample B ...

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  2. Gram molecular mass of ammonia (NH(3)) is 17 g Is it correct to regard...

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  3. Give one example each of polyatomic element and polyatomic ion

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  4. Name the element which is used as a reterence for the atomic masses of...

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  5. Four samples of water [H(2)O] are collected from different sources, Ea...

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  6. Identify the cations and anions in the following compounds: (a)CH(3)...

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  7. Classify the following based on atomicity (a) O(3) (b)P(4) (c )Sg.

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  8. Which of the following symbols of elements are incorrect? Write correc...

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  9. Give the example of trivalent cation and monovalent anion. Write the f...

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  10. Name the compound Al(2)(SO(4))(3), and mention the ions present in it.

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  11. Write the formulae and the names of the ions formed by the combination...

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  12. Name a non-metal which is tetratomic.

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  13. Name the cation and anion which constirute the molecule of magnesium o...

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  14. An element has valency 3. Write the formula of its oxide.

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  15. An element has valency 3. Write the formula of its oxide.

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  16. What do you understand by 1 amu?

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  17. What is meant by atomicity ? Explain with two examples.

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  18. Write the Latin names of sodium and iron.

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  19. What do you understand by the word mole?

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  20. What name is given to the number 6.022 xx 10^(23) ?

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