Ionic Bonding Flashcards
An ion
Charged atom or group of atoms (Na+) (Cl-)
How is a positive ion formed
How would we write Magnesium after losing 1 electron
How would we write Magnesium after losing 2 electrons
When an atom or group of atoms loses one or more electrons
Mg+
Mg2+
How is a negative ion formed
How would we write Magnesium after gaining 1 electron
How would we write Magnesium after gaining 2 electrons
When an atom or group of atoms gains one or more electrons
Mg-
Mg2-
Why do atoms ‘like’ to gain a full outer shell of electrons
It is a very stable structure
A stable octet (eight electrons)
Describe how a metal and non metal combine by transferring electrons
Metal atoms transfer electrons to become positive ions
Non metal atoms receive electrons to become negative ions
They are then attracted to each other and bond (opposite charges)
What charge have ionic compounds
Neutral
Equal charge of positive and negative ions
Ionic bond properties
And why
conduct electricity when dissolved or molten due to moving charged particles
High melting points as the strong attraction between opposite charges has to be overcome for them to melt
Strong bonds
TRANSFERRED ELECTRONS
An uncharged particle is either
An atom on its own (Cl)
A molecule with two or more atoms bonded together (Cl2)
What does an ionic bond achieve for each ion
Stable octect, complete outer shell
Why do oppositely charged ions in an ionic bond not conduct electricity when solid
When solid ions are held in place and cannot move about
