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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
Consider the following elements: Be, Li, Na, Ca, K. Name the elements of (a) same group (b) same period.
Name the method by which alkali metals can be extracted.
How do alkaline earth metals occur in nature?
Comment on the (i) reactivity (ii) colour (iii) physical state of group 17 elements.
Name the gas used in:
Filling balloons
Give reason:
Alkali metals are kept in an inert solvent.
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 from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
State the following:
The group which contains highly reactive electronegative non-metals including chlorine.
