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प्रश्न
Write the electronic configuration of the first two alkaline earth metals.
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उत्तर
Electronic configuration of the first two alkaline earth metals:
4Be: 1s22s2
12Mg: 1s22s22p63s2
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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,
What is meant in the periodic table by a group?
What are the following group known as?
Group 17
What happens to the number of valence electrons in atoms of elements as we go down a group of the periodic table?
Take any one alkali metal and write its reaction with (i)oxygen (ii)water (iii)acid.
How many electrons do inert gases have in their valence shells?
Give reason:
Alkali metals and halogens do not occur free in nature.
‘The periodic table contains elements methodically grouped together’.
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.
