Give the symbols for:
(i) a metal of group 2
(ii) a metal of group 13
(iii) two non-metals of group 16
(iv) most reactive non-metal group 17.
(i) Mg.
(ii) Al.
(iii) O and S.
(iv) Most reactive non-metal of group 17 is fluorine because its electronegativity is more. Its symbol is F.