Formation of ions

Question 1

What are ions ?

Answer 1

Charged particles - they can be single atoms or groups of atoms

Question 2

How do atoms become ions and why ?

Answer 2

atoms lose or gain electrons to form ions

To get a full outer shell like noble gases. Atoms with full outer shell are very stable

Question 3

How do metals and non metals become ions

Answer 3

Metals lose electrons from their outer shell to form + ions
Non metals gain electrons into their outer shell to form - ions

The numbers of electrons gained or lost is the same as the charge on the ions e.g. if 2 electrons lost, then charge would be +2

Question 4

Which elements most readily form ions ?

Answer 4

Group 1 and Group 2 - they’re metals and lose electrons to form + ion ( cations )

Group 6 and group 7 - they’re non metals and gain electrons to form - ion ( anion)

Question 5

elements in same group have same number of electrons which they have to gain or lose to from full outer shell so they form ..

Answer 5

same charge ion

Question 6

Magnesium symbol equation

Answer 6

Mg -> Mg ^ 2+ 2e^-

Question 7

chlorine symbol equation
oxygen symbol equation

Answer 7

cl + e^- = cl^-
o + 2e^- = o^2-