Which would you expect to experience a greater effective nuc

Which would you expect to experience a greater effective nuclear charge? a 3s electron of a Na atom a 2p electron of a Ne atom

Solution

Electron closer to nucleus to will have greater effective nucler cgarge.

2p electron in the Ne is closer to nucleus than the 3s electron of Na. Since it the 3S , subshel electron enter in to a new shell.

so 2S electron of Ne will have greater efective nucler charge than 3S of Na