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प्रश्न
‘The periodic table contains elements methodically grouped together’.
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उत्तर
The periodic table contains elements methodically grouped together like [I-A] alkali group [II-A] alkali earth group, halogens [17 OR 7-B] group, normal elements. Transition elements, noble gases [O-group], etc. If we know the properties of one member of a family, we know the properties of other members of the same family will be similar.
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संबंधित प्रश्न
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
Name the method by which alkali metals can be extracted.
Name the gas used in:
Filling balloons
State the characteristics which remain similar in moving down in a group of the periodic table.
Write a short note on the following type of element –
halogens
Write a short note on the following type of element –
noble gases
Name or state following with reference to the element of the first three periods of the periodic table.
An alkaline earth metal in period 3.
Select the correct answer from the options given below.
The most reactive halogen from group 17.
State the following:
The group whose elements are unreactive or inert.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
