How many of the following properties of halogen Increases with increase In atomic number.
(a) Number of valence electron (b) Metallic nature (c) Boiling points
(d) Atomic radii (e) Density (f)Inoisation enthalpies (g) Electronegativities (h) Reactivity (i) Oxidising nature. (j) `Delta_"eg"H` (magnitude wise)
