Which of the following statements are true?
Metals are elements that ionise by losing electrons
Non-metals are elements that ionise by gaining electrons
The general definition of metals and non-metals is:
Metals are elements which gain stability by losing electrons whereas non-metals are elements which attain stability by gaining electrons. This may not always be true and there may be some exceptions. Also, metals are in general, hard, opaque and conduct both heat and electricity. Metals also tend to be shiny and lustrous.