1(a)(i)-(b)(iii)Group 7 HalogensMedium6 marks
This question is about Group I and Group VII elements.
Give the symbol of the element from Group I or Group VII which:
has atoms with 11 protons
has atoms with 35 electrons
has molecules with an of 254
is used to detect unsaturated hydrocarbon molecules
gives a lilac flame test
can displace aqueous bromide ions