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7. In an atom, electrons revolve around the nucleus in their shell. The K shell can only accommodate 2 electrons while L shell can accommodate 8 electrons. Give​

Sagot :

Now lets she s-subshell structure .

Take an element Berylium

[tex]\huge{\overset{1s^2}{\boxed{\uparrow\downarrow}}\overset{2s^2}{\boxed{\uparrow\downarrow}}}[/tex]

You can see the S-orbital has only space for 2electrons .

  • So K shell has 2electrons

Come to p-orbital

Take an element Neon

[tex]\huge{\overset{1s^2}{\boxed{\uparrow\downarrow}}\overset{2s^2}{\boxed{\uparrow\downarrow}}\overset{2p^6}{\boxed{\uparrow\downarrow}\boxed{\uparrow\downarrow}\boxed{\uparrow\downarrow} }}[/tex]

The 2 means its L shell .

It has 8 electrons only and full filled .

  • Hence L shell can have only 8electrons
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