# 38.5: Analysis


1. As you move from left to right along a period (row), what is the change that happens in the outermost shell?

2. Describe how the number of unpaired electrons in the outermost shell is related to the group number, either directly or by the octet rule.

3. Assuming the goal is to be like a noble gas, a Group 8A element, determine the number of electrons that elements in each Group A column would tend to gain or lose in order to have a full outer shell.  Record whether the atoms in the group would tend to gain or lose electrons.  Record the number of electrons the atoms in the group would tend to gain or lose.  Write the charge an atom would tend to have.  Complete the ionization table.

Table $$\PageIndex{1}$$: Ionization Table

Group

Lose/Gain

Number

Charge on Atom

IA

lose

1

+1

IIA

IIIA

IVA

VA

VIA

VIIA

VIIIA