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प्रश्न
Write a short note on the following type of element –
halogens
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उत्तर
Elements of groups 17 (F, Cl, Br, I, At.) are called Halogens as they react with water to form acids.
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संबंधित प्रश्न
Arrange the Elements of Group 17 and Group 1 According to the Given Conditions.
Increasing order of atomic size,
Name two elements of each group.
How do atomic structures (electron arrangements) change in a period with an increase in atomic numbers moving left to right?
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.
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.
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.
State the following:
The group whose elements are unreactive or inert.
