Flashcards in Chemistry Structure And Bonding Deck (16):
Ionic bonding is between?
Metal ( group 1 or 2 )
Non metal ( group 6 or 7 )
How do you draw a dot and cross diagram of ionic bonding?
Atom that electron has been taken from in brackets with the ➕ charge on the outside
Atom that has gained the electron has outer shell drawn showing 7 of the own electron plus the other electron in which is the other shape. This is in brackets and the ➖ charge is on the outside of the brackets
Anions are positive or negative?
Cations are positive or negative?
what structure does an ionic compound have?
Giant ionic lattice
What is the melting point of an ionic compound? Why?
Very high melting point
A large amount of energy is required to overcome the string electrostatic attractions And separate the ions
What is the strength of an ionic compound? Why?
String ionic bond held together in a giant ionic lattice
Electrical conductivity of an ionic compound? Why?
Do not conduct when solid because ions cannot move as they are in a fixed position
Conducts when molten or when in an aqueous solution because the ions are now mobile
What is the solubility of an ionic compound? Why?
Insoluble in non polar solution but soluble in water because water makes a permanent dipole
Charge in ammonium
Charge on hydroxide ion
Charge on nitrate ion
Charge on sulphate ion
Charge on carbonate ion
What structure do atoms held together by metallic bonding have?
Giant metallic lattice