Atomic structure - electronic configuration (ions and elements))

Question 1

How many blocks are there in the periodic table

Answer 1

S block
P block
D block
F block

Question 2

What happens as you go down each energy level?

Answer 2

They increase in energy and so the 4s orbital is filled before the 3d orbital as it has a dlightly higher energy than 4s

Question 3

what does degenerate mean

Answer 3

all orbitals in the same subshell have the same energy.

Question 4

what happens in ions when atoms gain or lose electrons?

Answer 4

the transition metals fill the 4s subshell before the 3d subshell but lose electrons from the 4s first and not from the 3d (4s is lower in energy)