Atomic Structure: Electronic config of ions.

Question 1

When ions form what happens?

Answer 1

= subshell with the highest energy gains or looses electrons.

Question 2

In d block elements what happens?

Answer 2

= the 4s sub shell is filled before the 3d sub shell.
= energy of 4s is less than the energy of 3d sub shell.

Question 3

When d block elements form ions what happens?

Answer 3

= electrons are always lost from the 4s sub shell and not the 3d sub shell.