three electrons having a single electron in their outermost shell
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Total number of electrons = 3
So, atomic number Z = 3.
Z = 3 corresponds to the element Lithium (Li).
It's electronic configuration is (2,1)
As you see, there is one electron in outermost orbit.
[If you are in higher secondary, then electronic configuration is written as:
1s² 2s¹ ]
So, atomic number Z = 3.
Z = 3 corresponds to the element Lithium (Li).
It's electronic configuration is (2,1)
As you see, there is one electron in outermost orbit.
[If you are in higher secondary, then electronic configuration is written as:
1s² 2s¹ ]
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hydrogen, lithium and sodium
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