Chapter 5 - Electrons and Bonding Flashcards
Done
How does group number relate to electronic structure?
The group number tells you how many electrons in the outermost shell.
What is a shell?
Shells are energy levels, the energy levels increase as the shell number increases. The shell number may also be referred to as principal quantum number.
What is an orbital?
A region around the nucleus that can hold up to two electrons with opposite spins.
It shows us a 95% probability of where an electron will exist.
How many electrons can shell 1 hold?
2 electrons
How many electrons can shell 2 hold?
8 electrons
How many electrons can shell 3 hold?
18 electrons
How many electrons can shell 4 hold?
32 electrons
What shape is an s-orbital?
A spherical shape
What shape is a p-orbital?
A dumb-bell shape
What is an electron?
A cloud of negative charge, which has the shape of the orbital occupied by the electron.
Which orbitals are in shell 1?
1 s-orbital
Which orbitals are in shell 2?
1 s-orbital and 3 p-orbitals
Which orbitals are in shell 3?
1 s-orbital, 3 p-orbitals and 5 d-orbitals.
Which orbitals are in shell 4?
1 s-orbital, 3 p-orbitals, 5 d-orbitals and 7 f-orbitals
What is a sub-shell?
All of the orbitals of the same type in the same shell.
e.g. s sub-shell and p sub-shells
How many electrons can an s sub-shell hold?
2 electrons
How many electrons can a p sub-shell hold?
6 electrons
How many electrons can a d sub-shell hold?
10 electrons
How many electrons can a f sub-shell hold?
14 electrons
Order the sub-shells in terms of energy levels, starting from lowest.
s, p, d and f going up the shells.
With the exception of the 3d sub-shell which has a higher energy than 4s.
Which sub-shells are in shell 1?
1s
Which sub-shells are in shell 2?
2s, 2p
Which sub-shells are in shell 3?
3s, 3p, 3d
Which sub-shells are in shell 4?
4s, 4p, 4d, 4f