Question

name the elemnt which has twice as many electrons in its second shell in its first shell.write its electronic cnfiguration also

Answer 1

The element is Carbon .

It has 2 electrons in its K shell and 4 electrons in its L shell which twice the number of electrons in K shell( i.e., 2)

its electronic configuration is 2,4



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Answer 2

The element which has twice as many ‘electrons in its second shell’ in its ‘first shell’ is carbon, the electronic configuration of carbon is $\bold{1 \mathrm{s}^{2} 2 \mathrm{s}^{2} 2 \mathrm{p}^{2}}$.  

It has “2 electrons” in the L shell that is the “first shell” and “4 electrons” in the K shell that is the “second shell”. ‘Electronic configuration’ of elements is the “distribution of electrons” of the element in its orbitals.  

It is said that the electrons are free to move independently within the orbital of an element.