The answer would be (B) Sb, Sn, Se.
The periodic table may look like a confusing checkerboard of elements, but they are categorized in more ways than you may know.
For malleability, we look for metals. Metals/metallic elements have characteristics like electrical conductivity, <u>malleability</u>, ductility, and other physical characteristics like luster. The more an element is metallic, the more of these characteristics it will have.
So to answer this question, you simply have to see what kind of elements these are:
Sb, 51 (Antimony): <em>Metalloid</em>
Sn, 50 (Tin): <em>Transition Metal</em>
Se, 34 (Selenium): <em>Non-Metal</em>
Therefore, Antimony will have more metal characteristics than the rest, putting it at the top. Selenium is a non-metal, so that goes at the bottom, and Tin will be second.
