Your SlideShare is downloading. ×
Ions2
Ions2
Ions2
Ions2
Ions2
Ions2
Ions2
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Ions2

213

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
213
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. The importance of a full outer shell Part 2
  • 2.
    • When an atom gains or loses an electron it becomes an ION.
    • It now has either a positive or negative charge
      • Negative if it gains an electron - Anion
      • Positive if it loses an electron - Cation
    • Non-metals gain electrons
    • Metals lose electrons
  • 3. Working out the charge:
  • 4. 16p-18e = -2 Oxygen has 8 protons 8 electrons + 2 = 10  8p – 10e = -2 4p-2e = +2
  • 5. Ion Notation
    • Na 1+
    Chemical symbol Charge (1 electron lost)
  • 6. How many electrons?
    • Mg 2+
    • p – e = charge
    • 12 – e = +2
    • 12 = 2 + e
    • 12 – 2 = e
    •  e = 10 electrons
    • Mg2+
    • Mg has 12 electrons if neutral
    • A charge of 2+ means it has lost 2 electrons
    •  12 – 2 = 10
    OR
  • 7. Let’s practice Cl has 17 protons - Charge = gain electron  17 + 1 = 18 7+3 = 10 13 – 3 = 10 Ca 2+ P 3- Give the ion notation for an atom with 11 protons and 10 electrons Na 1+

×