The simple electron arrangement of silver (Ag) is:

2, 8, 18, 18, 1

This represents the distribution of electrons across the different energy levels (shells) of the atom:

* 2 electrons in the first shell (n=1)

* 8 electrons in the second shell (n=2)

* 18 electrons in the third shell (n=3)

* 18 electrons in the fourth shell (n=4)

* 1 electron in the fifth shell (n=5)

This arrangement reflects the fact that silver is a transition metal with a single valence electron in its outermost shell.