The most reactive metal is francium.
no it is because metallic character increases down the group
Carbon, Silicon or Boron
bottom left
From top to bottom in the group the electro positivity increases so that the metallic character increases .
Halite is non-metallic. You can tell because any mineral that you can partially see through it is non-metallic . . . metallic are only minerals that look like metal.
All the four elements listed in the question are non-metals and not metals. So it is not possible to tell the metallic character.
K has more metallic character
no it is because metallic character increases down the group
ununoctium
metallic character increases
Across a period, the metallic character decreases.
The element in Period 3 that has the greatest metallic character is magnesium. In periods, the metallic character decreases when atomic number increases.
Carbon, Silicon or Boron
bottom left
metallic character encompasses all the charateristics of metals, such as the melting point, conductivity, electromagnet properties, density etc. electropositivity is a measure of an element's ability to donate electrons, and therefore form positive ions. In general, the gretaer the metallic character of a metal, the more electropositive it is.
The metallic character decrease from left to right.
From top to bottom in the group the electro positivity increases so that the metallic character increases .