________ are elements which can accept one or more electrons and form negative ions.
Which of the following pairs of elements would have a more negative electron gain enthalpy? (i) O or F
(ii) F or Cl
State whether the following statements are true or false : (a) A sodium ion has positive charge because it has more protons than a neutral atom. (b) A chloride ion has negative charge because it has more electrons than a neutral atom.