How many molecules of sodium are contained in 10.9 moles of sodium

What three things determine the shape and size of a puddle when water is poured out onto a surface

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

Ab c or d ? i’m not sure what the answer is