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प्रश्न
How do metals react with hydrogen? Explain with an example.
उत्तर
Metals generally do not react with hydrogen. But some reactive metals like sodium, potassium, calcium and magnesium can force the hydrogen atom to accept the electrons given by them and form salt-like ionic solid compounds called metal hydrides.
For example:
2Na(s) + H2(g) → 2NaH(s)
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संबंधित प्रश्न
Metal A has electronic configuration (2, 8, 1) and metal B has (2, 8, 8, 2). Which is more reactive? Why? Identify these metals.
Name two metals which form amphoteric oxides.
Name the metal which has been placed at the top of the reactivity series.
Write equation for the reaction of magnesium with oxygen.
How would you show that silver is chemically less reactive than copper?
Explain why, the surface of some metals acquires a dull appearance when exposed to air for a long time.
With the help of examples, describe how metal oxides differ from non-metal oxides.
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
In nature, metal A is found in a free state while metal B is found in the form of its compounds. Which of these two will be nearer to the top of the activity series of metals?
Answer the following question:
An element X on reacting with oxygen forms an oxide X2O. This oxide dissolves in water and turns red litmus blue. State whether element X is metal or a non - metal. Explain with a proper example.
