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प्रश्न
State the characteristics which remain similar in moving down in a group of the periodic table.
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उत्तर
Character that remains similar is physical and chemical properties, i.e. The alkali metal (Group 1 - A) are very reactive Li < Na < K, Rb < Cs reactivity increases. Halogen atoms are also very reactive.
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संबंधित प्रश्न
What is meant in the periodic table by a group?
What are the following group known as?
Group 18
Name and state the following with reference to the elements of the first three periods of the periodic table.
Noble gas having electronic configuration: 2, 8, 8.
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
Name the gas used in:
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Give reason:
Alkali metals are kept in an inert solvent.
Write a short note on the following type of element –
noble gases
State the main helpful features of the long form of the periodic table.
Give a reason for the following:
Group 1 [I – A] elements are called alkali metals.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
