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प्रश्न
Name the gas used in:
Bright colour advertising light works
उत्तर
Neon
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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 and state the following with reference to the elements of the first three periods of the periodic table.
Group whose elements have zero valencies.
Name the alkali metals, How many electron(s) they have in their outermost orbit.
How many electrons do inert gases have in their valence shells?
Comment on the (i) reactivity (ii) colour (iii) physical state of group 17 elements.
Give reason:
Alkali metals and halogens do not occur free in nature.
‘The periodic table contains elements methodically grouped together’.
State the main helpful features of the long form of the periodic table.
Give a reason for the following:
Noble gases do not form compounds readily.
State the following:
The group from the groups 1 [IA], 2 [IIA], 16 [VIA] and 7 [VIIA] whose elements are most electronegative.
