Question

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​

Answer 1

Now lets she s-subshell structure .

Take an element Berylium

$\huge{\overset{1s^2}{\boxed{\uparrow\downarrow}}\overset{2s^2}{\boxed{\uparrow\downarrow}}}$

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

• So K shell has 2electrons

Come to p-orbital

Take an element Neon

$\huge{\overset{1s^2}{\boxed{\uparrow\downarrow}}\overset{2s^2}{\boxed{\uparrow\downarrow}}\overset{2p^6}{\boxed{\uparrow\downarrow}\boxed{\uparrow\downarrow}\boxed{\uparrow\downarrow} }}$

The 2 means its L shell .

It has 8 electrons only and full filled .

• Hence L shell can have only 8electrons