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प्रश्न
How do non-metals react with hydrogen? Explain with an example.
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उत्तर
Non-metals react with hydrogen to form covalent hydrides. The non-metal hydrides are formed by the sharing of electrons; that is, non-metal hydrides are formed by covalent bonding.
Sulphur is a non-metal which combines with hydrogen to form a covalent hydride called hydrogen sulphide (H2S).
\[\ce{\underset{Hydrogen}{H2_{(g)}} + \underset{(Non-metal)}{\underset{Sulphur}{S_{(I)}}} -> \underset{(Covalent hydride)}{\underset{Hydrogen sulphide}{H2S_{(g)}}}}\]
Hydrogen sulphide gas has a characteristic odour resembling rotten eggs.
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संबंधित प्रश्न
‘E’ is an element which reacts with oxygen to form an oxide E2O. An aqueous solution of E2O turns red litmus blue, so:
i. What is the nature of oxide E2O ?
ii. Write the name of element ‘E’.
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An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be ______.
The solution of Aluminium sulphate in water is .....................
(a) Green
(b) Colourless
(c) Pink
(d) Blue
Give reasons for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.
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\[\ce{Na + O2 ->}\]
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\[\ce{Fe_{(s)} + H2O_{(g)} ->[Red heat]}\]
Calcium is a ______ reactive metal than sodium.
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
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Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
Write the equation for the reaction of:
Iron with dilute hydrochloric acid.
Name the products formed in the given case. Also indicate the physical states of all the substances involved.
Name one metal which displaces copper from copper sulphate solution.
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3 solution?
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An element E reacts with water to form a solution which turns phenolphthalein solution pink. The element E is most likely to be ______.
Name a metal for the given case:
It does not react with any physical state of water.
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Choose the correct alternative and rewrite the following:
Which of the following is lue in colour?
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