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प्रश्न
Name the gas used in:
Filling balloons
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उत्तर
Helium
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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 two elements of each group.
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
Name the gas used in:
Bright colour advertising light works
Give reason:
Inert gases do not form compounds.
Write a short note on the following type of element –
alkaline earth metals
Write a short note on the following type of element –
halogens
Write a short note on the following type of element –
noble gases
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.
