Page 20 - PRE-U STPM CHEMISTRY TERM 1
P. 20
Chemistry Term 1 STPM
5 The s orbital is spherical and non-directional.
Y
CHAPTER X
2
Z
The shaded area represents the region in which the chance of
finding the s electron is more that 95%. The size of the orbital
increases in the order 1s 2s 3s .....
6 The p orbitals have dumb-bell shapes and are directional.
The diagram below shows the distribution of three p orbitals around
the nucleus.
y
z
x
50
02 Chapter 2.indd 50 3/26/18 3:14 PM
