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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
Consider the following elements: Be, Li, Na, Ca, K. Name the elements of (a) same group (b) same period.
What is meant in the periodic table by a group?
What are the following group known as?
Group 1
How do atomic structures (electron arrangements) change in a period with an increase in atomic numbers moving left to right?
Write the reactions of the first three alkaline earth metals with dilute hydrochloric acid.
How do alkaline earth metals occur in nature?
Name the gas used in:
Light bulbs
Give reason:
Alkali and alkaline earth metal compounds usually form electrovalent compounds.
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 –
alkaline earth metals
