Into to Chem help?

Question

1.What is a cathode ray? Which subatomic particle is detected.


2.Which group of the periodic table is know as the noble gases, list them.

3.Distiguish between a sublevel and an orbital


Thanks so much! =)

Answer 1

1. electrons
2. Group 0 (aka 8, aka 18 in USA)
3. An orbital can hold 2 electrons. Sublevels contain 1 x s, 3 x p, 5 x d and 7 x f orbitals (level 4 and above).