Question

what is a purely ionic bond

Answer 1

A purely ionic bond is when there is no sharing of electrons (covalent bond) it is just an exchange of electrons.

For example,

NaCl

is Purely ionic, sodium gives an electron to chlorine, this leaves sodium like the noble gas Neon and chlorine like the noble gas Argon

Answer 2

you can tell if a bond is going to be purely ionic if it is a group 1 or group 2 element bonded with a group 13 to 17 element.

This relationship also makes sense if you consider electronegativity (which is just a measure of electron affinity)

http://baldpuppies.pbworks.com/f/1239210342/electronegativity.bmp

Note that these electronegativity values are sort of arbitrary and based on experimental method the general trend is distinct though

Answer 3

the transition metals is where things get weird

Answer 4

ah okay thanks