‘WHAT? By giving up its lone outer electron, a sodium atom achieves a desirable quantum mechanical configuration and is left with a positive charge. By accepting an extra electron, chlorine fills its eight electrons and gains a negative charge. The charged ions are then held together to make molecules and crystals of common salt (NaCl) by electrostatic forces… Lassie, are you absolutely sure that’s what the professor told you?’
Ávila, Spain At school I wasn’t much good at anything – until, that is, I had the good fortune to land in Mr Hodges’s French set. It wasn’t just the ten words of vocabulary and the irregular verb we learnt every day, it was the whole structured Hodges approach which gave me confidence, showing how
