What is the noble gas configuration for oxygen?
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Ответ:
The Electron configuration of the Oxygen is
And the Helium is represented by the
So, the
Hope this Helps :)
Ответ:
Option (a) is the correct answer.
Explanation:
It is known that atoms are arranged with increasing atomic number from left to right. As a result, there will be increase in number of protons and electrons within a period, that is, from left to right.
Since protons have positive charge and electrons have negative charge so, more protons and electrons means more tightly they are attracted towards each other.
Hence, this will lead to a decrease in size of the atoms.
Therefore, we can conclude that atomic radius tends to decrease from left to right across a period in the periodic table.