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प्रश्न
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
उत्तर
The number of valence electrons remains the same as we go down a group.
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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 17
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
Name the gas used in:
Filling balloons
Give reason:
Alkali metals and halogens do not occur free in nature.
Write a short note on the following type of element –
alkali metals
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.
Give a reason for the following:
Noble gases do not form compounds readily.
