Date _________________
NOTES-039
CHEM 110 (BEAMER)
xNOTES-039:x Ions
Formation and Charge of Ions
xxx
xxx
Note: Please take out your periodic tables. You will need them for the period.
I.
are formed when atoms

to attain a
II.

are

lose

form
with a
because
to look like the

Examples:

sodium (use the back page to take notes on the diagram)


How many protons does sodium have?

How many electrons does sodium have?

How many electrons does the closest (by atomic number) noble gas have?

How many electrons does the sodium have to lose to get the same # e – as the noble gas?

number of protons:

Symbol:
new number of e–:
charge:
gallium (use the back page to take notes on the diagam)

How many protons does gallium have?

How many electrons does gallium have?

How many electrons does the closest noble gas have?

How many electrons does the gallium have to lose to get the same # e– as the noble gas?

number of protons:
new number of e–:
charge:
NOTE:
Page 1 of 3
Date _________________
NOTES-039
CHEM 110 (BEAMER)
III.

are

gain

form

Examples:

chlorine

IV.
with a
because
to look like the

How many protons does chlorine have?

How many valence electrons does chlorine have?

How many valence electrons does the closest (by atomic number) noble gas have?

How many electrons does the chlorine have to lose to get the same # e– as the noble gas?

number of protons:

Symbol:
new number of e–:
charge:
Name:
nitrogen

How many protons does nitrogen have?

How many electrons does nitrogen have?

How many valence electrons does the closest noble gas have?

How many electrons does the nitrogen have to lose to get the same # e– as the noble gas?

number of protons:

Symbol:
new number of e–:
charge:
Name:
in chemistry.
Page 2 of 3
Date _________________
NOTES-039
CHEM 110 (BEAMER)
IV.

are formed when atoms
to attain a
Page 3 of 3