How can I write orbital notations and complete electron configuration for the following elements? a. Beryllium b. aluminium no

Orbital notation refers to the electron configuration of
an element. The notation tells you how many electrons are in the element, what orbitals
of the atom they are in, and in what direction the electrons are spinning. They can spin
either clockwise (<) or counterclockwise, (>). In many sources, the
notation is usually an up arrow for clockwise rotation, and a down arrow for counter
clockwise rotation. Since electrons fill up orbitals in a special way related to their
energy level, and only two per sub-level, which does not matter at this time. The
orbitals can also only hold a certain number and the limits are as
follows:

s=2

p=6

d=10

f=14

Also
the orbitals are filled according to this method:

1s, 2s,
2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d,
7p

Since Beryllium has 4electrons in its ground state the
notation is:

1s2 2s2, and this
is

1s<>

2s<>

Aluminum
has 13 electrons in it s ground state, using arrows for electrons, it is written like
this:

1s2 2s2 2p6 3s2
3p1

1s<>

2s<>

2p<>
<>
<>

3s<>

3p<