C2.2.3 - Forming Ions Flashcards
What is an ion?
An ion is an electrically charged particle formed when an atom loses or gains electrons
Do the amount of protons and neutrons change when forming an ion?
No
Metals can lose electrons and become positive ions.
Is this true?
Yes
Non-metals can lose electrons and become positive ions.
Is this true?
No, non-metals gain electrons and become negative ions
What is the only shell atoms can lose electrons on?
The outer shell
How do you work out an ion’s electronic structure?
You get the original electronic structure and add / subtract the electrons
What does an electron diagram represent?
The electronic structure of an atom or an ion
What do you draw to represent a shell on an electron diagram?
A circle
What do you draw to represent electrons on an electron diagram?
Dots or crosses
How changes do you make to draw an electron diagram of an ion?
You put the diagram in brackets and outside the brackets you write the charge at the top right.
Where do you write the chemical symbol in an electron diagram?
In the centre
How do you represent a gained electron on an ion on an electron diagram?
It is either a dot or a cross (opposite to what you used for the other electrons)
