Which element has more pronounced non-metallic properties: a) bromine or iodine; b) Sulfur or phosphorus?

Which element has more pronounced non-metallic properties: a) bromine or iodine; b) Sulfur or phosphorus? Give a substantiated answer to equipping the position of the elements in the periodic table of elements.

If you know the position of an element in the periodic table, then you can find out what properties it exhibits – metallic or non-metallic, and to what extent.
In groups, non-metallic properties are enhanced from bottom to top. Bromine is located above iodine, which means its non-metallic properties are greater.
In periods, non-metallic properties increase from left to right. Sulfur is located to the right of phosphorus, which means that its non-metallic properties are stronger.
In order not to forget this, you need to look at fluorine – it is the strongest non-metal.