Advertisements
Advertisements
प्रश्न
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
Advertisements
उत्तर
The reaction of an alkali metal with oxygen - React rapidly with oxygen
4Na + O2 → 2Na2O
The reaction of an alkali metal with water - React with water violently and produce hydrogen
2M + 2H2O → 2MOH + H2
The reaction of an alkali metal with acid - React violently with dilute. HCl and dilute. H2SO4 to produce hydrogen
2M + 2HCl → 2MCl + H2
APPEARS IN
संबंधित प्रश्न
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
How do alkaline earth metals occur in nature?
Name the gas used in:
Light bulbs
Name the gas used in:
Bright colour advertising light works
Write a short note on the following type of element –
alkali metals
Write a short note on the following type of element –
noble gases
‘The periodic table contains elements methodically grouped together’.
State the main helpful features of the long form of the periodic table.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
Match the elements of List – I with their type from List – II.
| List – I | List – II |
| 1. Highly reactive, univalent metals | A: Halogens |
| 2. Highly reactive, univalent non-metals | B: Transition elements |
| 3. Unreactive, inert elements | C: Alkali metals |
| 4. Elements of group 3 to 12 [IB to VII B and VIII] | D: Lanthanide series |
| 5. Radioactive elements | E: Noble gases |
| F: Actinide series |
